A regular pentagon and a regular hexagon are both inscribed in the circle below. Which shape has a bigger area? Explain your reasoning.

A Regular Pentagon And A Regular Hexagon Are Both Inscribed In The Circle Below. Which Shape Has A Bigger

Answers

Answer 1

Answer:

Hexagon

Step-by-step explanation:

Since the hexagon has more sides it should cover more space


Related Questions

List of children per family in a society as 2,3,0,1,2,1,12,0,3,1,2,1,2,2,1,1,2,0, is an example of data. Select one: a. grouoed b. nominal c. ordinal d. ungrouped Median as quartiles can be termed as Select one: a. Q2 b. Q4 c. Q3 d. Q1

Answers

The list of children per family in the given society is an example of ungrouped data.

The median and quartiles can be termed as Q2, Q1, and Q3, respectively.

In statistics, data can be classified into different types based on their characteristics.

The given list of children per family represents individual values, without any grouping or categorization.

Therefore, it is an example of ungrouped data.

To find the median and quartiles in the data, we can arrange the values in ascending order: 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 12.

The median (Q2) is the middle value in the ordered data set. In this case, the median is 2, as it lies in the middle of the sorted list.

The quartiles (Q1 and Q3) divide the data set into four equal parts.

Q1 represents the value below which 25% of the data falls, and Q3 represents the value below which 75% of the data falls.

In the given data, Q1 is 1 (the first quartile) and Q3 is 2 (the third quartile).

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A Marketing Example The Biggs Department Store chain has hired an advertising firm to determine the types 2 amount of advertising it should invest in for its stores. The three types of advertising availste are television and radio commercials and newspaper ads. The retail chain desires to know tie number of each type of advertisement it should purchase in order to maximize exposure. ii estimated that each ad or commercial will reach the following potential audience and cos Q e ​ following amount: The company must consider the following resource constr.it iss: 1. The budget limit for advertising is $100,000. 2. The television station has time available for 4 commercials. 3. The radio station has time available for 10 commercials. 4. The newspaper has space available for 7 ads. 5. The advertising agency has time and staff available for producing no more than a toald 15 commercials and/or ads.

Answers

The Biggs Department Store chain wants to determine the types and amount of advertising it should invest in to maximize exposure. The available options are television commercials, radio commercials, and newspaper ads.

However, there are several resource constraints that need to be considered:

1. The budget limit for advertising is $100,000.
2. The television station has time available for 4 commercials.
3. The radio station has time available for 10 commercials.
4. The newspaper has space available for 7 ads.
5. The advertising agency can produce no more than a total of 15 commercials and/or ads.

To determine the optimal allocation of advertising, we need to consider the potential audience reach and cost for each type of advertising. The company should calculate the cost per potential audience reached for each option and choose the ones with the lowest cost.

For example, if a television commercial reaches 1,000 potential customers and costs $10,000, the cost per potential audience reached would be $10.

The company should then compare the cost per potential audience reached for each option and choose the ones that provide the most exposure within the given constraints.

Here's a step-by-step approach to finding the optimal allocation:

1. Calculate the cost per potential audience reached for each type of advertising.
2. Determine the number of each type of advertisement that can be purchased within the budget limit of $100,000.
3. Consider the time and space constraints for each type of advertisement. For example, if the television station has time available for 4 commercials, the number of television commercials should not exceed 4.
4. Consider the production constraints of the advertising agency. If the agency can produce no more than a total of 15 commercials and/or ads, ensure that the total number of advertisements does not exceed 15.

By carefully considering these constraints and evaluating the cost per potential audience reached, the Biggs Department Store chain can determine the optimal allocation of advertising to maximize exposure within the given limitations.

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T-Shirt Profit. The latest demand eauation for your Yocs vs. Alien T-कhirts is given by Q =−60x+900 each. Find the Weeldy cast as a function of the unit price y.

Answers

The weekly cost as a function of the unit price y is given by the expression (900 - Q) * y, where Q = -60x + 900 represents the demand equation for Yocs vs. Alien T-Shirts.

The weekly cost as a function of the unit price y can be determined by multiplying the quantity demanded by the unit price and subtracting it from the fixed cost. Given that the demand equation is Q = -60x + 900, where Q represents the quantity demanded and x represents the unit price, the cost equation can be derived.

To find the weekly cost, we need to express the quantity demanded Q in terms of the unit price y. Since Q = -60x + 900, we can solve for x in terms of y by rearranging the equation as x = (900 - Q) / 60. Substituting x = (900 - Q) / 60 into the cost equation, we get:

Cost = (900 - Q) * y

Thus, the weekly cost as a function of the unit price y is given by the expression (900 - Q) * y.

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What is the approximate maximum amount that a firm should consider paying for a project that will return $5,000 annually for 7 years if the opportunity cost is 10%? a. $33,520 b. $24,342 c. $42,540 d. $55,000

Answers

The option that shows the approximate maximum amount that a firm should consider paying for a project that will return $5,000 annually for 7 years if the opportunity cost is 10% is B. $2,540.

When we calculate the present value of the cash flows, we can find the approximate maximum amount that a firm should consider paying for a project that will return $5,000 annually for 7 years if the opportunity cost is 10%.

Step 1: Calculate the present value factor

PVF = 1 / (1 + r)^n

Where:

r = 10% per annum

n = 7 years

PVF = 1 / (1 + 0.1)^7

= 0.508

Step 2: Calculate the present value of the cash flows

Present value of cash flows = Annuity * PVF

Present value of cash flows = $5,000 * 0.508

= $2,540

The approximate maximum amount that a firm should consider paying for the project is the present value of the cash flows, which is $2,540.

Therefore, the option that shows the approximate maximum amount that a firm should consider paying for a project that will return $5,000 annually for 7 years if the opportunity cost is 10% is B. $2,540.

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When 4(0. 5x+2. 5y-0. 7x-1. 3y+4) is simplified, what is the resulting expression

Answers

The resulting expression after simplification is -0.8x + 4.8y + 16.

To simplify the expression 4(0.5x + 2.5y - 0.7x - 1.3y + 4), we can distribute the 4 to each term inside the parentheses:

4 * 0.5x + 4 * 2.5y - 4 * 0.7x - 4 * 1.3y + 4 * 4

This simplifies to:

2x + 10y - 2.8x - 5.2y + 16

Combining like terms, we have:

(2x - 2.8x) + (10y - 5.2y) + 16

This further simplifies to:

-0.8x + 4.8y + 16

In this simplification process, we first distributed the 4 to each term inside the parentheses using the distributive property. Then, we combined like terms by adding or subtracting coefficients of the same variables. Finally, we rearranged the terms to obtain the simplified expression.

It is important to note that simplifying expressions involves performing operations such as addition, subtraction, and multiplication according to the rules of algebra. By simplifying expressions, we can make them more concise and easier to work with in further calculations or analysis.

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Group 3. A = 0001 0 35 4 3021 10 0 a) Determine the characteristic polynomial of matrix A. b) Determine justifying the eigenvalues of matrix A. c) For each eigenvalue of A, determine justitying a base for his eigenspace. d) Determine justifying if it is possible to obtain an invertible matrix P that P-¹AP is a diagonal matrix, and in case it is, indicate a diagonal matrix of A and an invertible P such that A -= P¹AP.

Answers

The characteristic polynomial is determined by finding the determinant of A-λI, eigenvalues are obtained by solving the characteristic polynomial equation, eigenvectors are found by solving (A-λI)v=0, and the possibility of obtaining a diagonal matrix depends on the linear independence of eigenvectors.

What are the characteristic polynomial, eigenvalues, eigenvectors, and the possibility of obtaining a diagonal matrix for matrix A?

a) The characteristic polynomial of matrix A is det(A - λI), where det represents the determinant, A is the matrix, λ is the eigenvalue, and I is the identity matrix.

b) To determine the eigenvalues of matrix A, we solve the characteristic polynomial equation det(A - λI) = 0 and find the values of λ that satisfy it.

c) For each eigenvalue of A, we find the eigenvectors by solving the equation (A - λI)v = 0, where v is the eigenvector.

d) To determine if it is possible to obtain an invertible matrix P such that P^(-1)AP is a diagonal matrix, we need to check if A has n linearly independent eigenvectors, where n is the size of the matrix.

If so, we can construct the diagonal matrix by placing the eigenvalues on the diagonal and the corresponding eigenvectors as columns in the invertible matrix P.

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In the accompanying diagram, AB || DE. BL BE
If mzA=47, find the measure of D.

Answers

Measure of D is 43 degrees by using geometry.

In triangle ABC, because sum of angles in a triangle is 180

It is given that AB is parallel to DE, AB is perpendicular to BE and AC is perpendicular to BD. This means that ∠B ∠ACD and ∠ACB = 90

Now,

m∠C = 90

m∠A = 47

m∠ABC = 180 - (90+47) = 43

In triangle BDC, because sum of angles in a triangle is 180

m∠DBE = 90 - ∠ABC = 90 - 43 = 47

∠ BED = 90 (Since AB is parallel to DE)

Therefore∠ BDE = 180 - (90 + 47) = 180 - 137 = 43

The required measure of ∠D = 43 degrees.

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What are the x-intercepts of the parabola?

A (0, 3) and (0, 5)

B (0, 4) and (0, 5)

C (3, 0) and (5, 0)

D (4, 0) and (5, 0)

Answers

Answer:

C (3,0)(5,0)

Step-by-step explanation:

Because math duh

The ship below has been drawn using the scale 1: 1000. a) What is the real length of the ship in centimetres? b) What is the real length of the ship in metres? 8 cm​

Answers

a) The real length of the ship in centimeters is 8000 cm.

b) The real length of the ship is 80 meters.

To determine the real length of the ship, we need to use the scale provided and the given measurement on the drawing.

a) Real length of the ship in centimeters:

The scale is 1:1000, which means that 1 unit on the drawing represents 1000 units in real life. The given measurement on the drawing is 8 cm.

To find the real length in centimeters, we can set up the following proportion:

1 unit on the drawing / 1000 units in real life = 8 cm on the drawing / x cm in real life

By cross-multiplying and solving for x, we get:

1 * x = 8 * 1000

x = 8000

b) Real length of the ship in meters:

To convert the length from centimeters to meters, we divide by 100 (since there are 100 centimeters in a meter).

8000 cm / 100 = 80 meters

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The following values are the deviations from the mean (X-X) for a specific set of data. We have given you the deviations so you do not need to calculate the first step in the formula because we did it for you. Calculate the sample variance. -4,-1,-1, 0, 1, 2, 3 Remember the formula for the sample variance is: Σ(X-X)²/ n-1. Following the class . policy, round to 2 decimal places (instead of 1. you must enter 1.00).

Answers

The sample variance for the given set of data is 5.33 (rounded to two decimal places).

To calculate the sample variance, we need to follow the formula: Σ(X-X)² / (n-1), where Σ represents the sum, (X-X) represents the deviations from the mean, and n represents the number of data points.

Given the deviations from the mean for the specific set of data as -4, -1, -1, 0, 1, 2, and 3, we can calculate the sample variance as follows:

Step 1: Calculate the squared deviations for each data point:

(-4)² = 16

(-1)² = 1

(-1)² = 1

0² = 0

1² = 1

2² = 4

3² = 9

Step 2: Sum the squared deviations:

16 + 1 + 1 + 0 + 1 + 4 + 9 = 32

Step 3: Divide the sum by (n-1), where n is the number of data points:

n = 7

Sample variance = 32 / (7-1) = 32 / 6 = 5.33

Therefore, the sample variance for the given set of data is 5.33 (rounded to two decimal places).

Note: It is important to follow the class policy, which specifies rounding to two decimal places instead of one. This ensures consistency and accuracy in reporting the calculated values.

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a) Could a system on the circle hars (i) a single stable fixed point and no other fixed points?
(ii) turo stable fixed points and no other fixed points? (b) What are the answers to question (i) and (ii) for systems on the line x˙=p(x).

Answers

a) i) No, a system on the circle cannot have a single stable fixed point and no other fixed points.

(ii) Yes, a system on the circle can have two stable fixed points and no other fixed points

b) (i) Yes, a system on the line X = p(x) can have a single stable fixed point and no other fixed points.

(ii) No, a system on the line cannot have two stable fixed points and no other fixed points.

a) (i) No, a system on the circle cannot have a single stable fixed point and no other fixed points.

On a circle, the only type of stable fixed points are limit cycles (closed trajectories).

A limit cycle requires the presence of at least one unstable fixed point or another limit cycle.

(ii) Yes, a system on the circle can have two stable fixed points and no other fixed points.

This scenario is possible when the two stable fixed points attract the trajectories of the system, resulting in a stable limit cycle between them.

b) (i) Yes, a system on the line X = p(x) can have a single stable fixed point and no other fixed points.

The function p(x) must satisfy certain conditions such that the equation X= p(x) has only one stable fixed point and no other fixed points.

For example, consider the system X = -x³. This system has a single stable fixed point at x = 0, and there are no other fixed points.

(ii) No, a system on the line X = p(x) cannot have two stable fixed points and no other fixed points.

If a system on the line has two stable fixed points,

There must be at least one additional fixed point (which could be stable, unstable, or semi-stable).

This is because the behavior of the system on the line is unidirectional,

and two stable fixed points cannot exist without an additional fixed point between them.

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The above question is incomplete , the complete question is:

a) Could a system on the circle have (i) a single stable fixed point and no other fixed points?

(ii) two stable fixed points and no other fixed points?

(b) What are the answers to question (i) and (ii) for systems on the line x˙=p(x).

9) Find the angles of a parallelogram if one of its angle is 105 degree

Answers

The angles of the parallelogram are:

A = 105 degrees

B = 75 degrees

C = 105 degrees

D = 75 degrees

In a parallelogram, opposite angles are equal. Since one of the angles in the parallelogram is given as 105 degrees, the opposite angle will also be 105 degrees.

Let's denote the angles of the parallelogram as A, B, C, and D. We know that A = C and B = D.

Given that one angle is 105 degrees, we have:

A = 105 degrees

C = 105 degrees

Since the sum of angles in a parallelogram is 360 degrees, we can find the value of the remaining angles:

B + C + A + D = 360 degrees

Substituting the known values, we have:

105 + 105 + B + D = 360

Simplifying the equation:

210 + B + D = 360

Next, we use the fact that B = D to simplify the equation further:

2B = 360 - 210

2B = 150

Dividing both sides by 2:

B = 75

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In ΔABC, ∠C is a right angle. Find the remaining sides and angles. Round your answers to the nearest tenth.

a=9, b=4

Answers

In a right triangle ΔABC, where ∠C is a right angle, and given that side lengths a = 9 and b = 4, we can find the remaining sides and angles using the Pythagorean theorem and trigonometric ratios.

1. Find side length c using the Pythagorean theorem:

  c² = a² + b²

  c² = 81 + 16

  c ≈ √97

  c ≈ 9.8

Therefore, the length of side c is approximately 9.8.

2. Calculate the remaining angles:

  Since ∠C is a right angle, we know that ∠A + ∠B = 90 degrees.

  ∠A = sin⁻¹(a/c) = sin⁻¹(9/9.8) ≈ 69.4 degrees

  ∠B = 90 - ∠A ≈ 90 - 69.4 ≈ 20.6 degrees

Therefore, ∠A is approximately 69.4 degrees, and ∠B is approximately 20.6 degrees.

To summarize, in ΔABC where ∠C is a right angle and given that a = 9 and b = 4, the remaining sides and angles (rounded to the nearest tenth) are as follows:

Side c ≈ 9.8

∠A ≈ 69.4 degrees

∠B ≈ 20.6 degrees

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Each of the positive integers 1 to 100 are written on a sheet of paper 123,...98,99,100 some of these integers are erased. the product of those integers still on the paper leaves a remainder of 4 when divided by 5 . find the least number of integers that could have been erased? (actual number answer)

Answers

The least number of integers that could have been erased is one.

Here, we are asked to find the least number of integers that could have been erased to leave a remainder of 4 when divided by 5 from the product of the remaining numbers.

On dividing 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200 by 5,

we get the remainders as 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1.

The product of these numbers is divisible by 5, i.e., the remainder is 0.On observing the remainders above,

we can say that if at least one number from the set (124, 129, 134, 139, 144, 149, 154, 159, 164, 169, 174, 179, 184, 189, 194, 199) is erased, then the product of the remaining numbers leaves a remainder of 4 when divided by 5.

The above set contains 16 numbers, therefore, the least number of integers that could have been erased is one.

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One of two processes must be used to manufacture lift truck motors. Process A costs $90,000 initially and will have a $12,000 salvage value after 4 years. The operating cost with this method will be $25,000 per year. Process B will have a first cost of $125,000, a $35,000 salvage value after its 4-year life, and a $7,500 per year operating cost. At an interest rate of 14% per year, which method should be used on the basis of a present worth analysis?

Answers

Based on the present worth analysis, Process A should be chosen as it has a lower present worth compared to Process B.

Process A

Initial cost = $90,000Salvage value after 4 years = $12,000Annual operating cost = $25,000

Process B

Initial cost = $125,000Salvage value after 4 years = $35,000Annual operating cost = $7,500

Interest rate = 14% per year

The formula for calculating the present worth is given by:

Present Worth (PW) = Future Worth (FW) / (1+i)^n

Where i is the interest rate and n is the number of years.

Process A is used for 4 years.

Therefore, Future Worth (FW) for Process A will be:

FW = Salvage value + Annual operating cost × number of years

FW = $12,000 + $25,000 × 4

FW = $112,000

Now, we can calculate the present worth of Process A as follows:

PW = 112,000 / (1+0.14)^4

PW = 112,000 / 1.744

PW = $64,263

Process B is used for 4 years.

Therefore, Future Worth (FW) for Process B will be:

FW = Salvage value + Annual operating cost × number of years

FW = $35,000 + $7,500 × 4

FW = $65,000

Now, we can calculate the present worth of Process B as follows:

PW = 65,000 / (1+0.14)^4

PW = 65,000 / 1.744

PW = $37,254

The present worth of Process A is $64,263 and the present worth of Process B is $37,254.

Therefore, Based on the current worth analysis, Process A should be chosen over Process B because it has a lower present worth.

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If the distance covered by an object in time t is given by s(t)=t²+5t
, where s(t) is in meters and t is in seconds, what is the distance covered in the interval between 1 second and 5 seconds?

Answers

To answer that you would take s(5) - s(1)
s(1) = 1^2 + 5(1) = 1 + 5 = 6 (m/s)

s(5) = 5^2 + 5(5) = 25 + 25 = 50 (m/s)

Therefore the distance covered would be:
50 - 6 = 44m/s

The distance in the interval between 1 second and 5 seconds where the distance covered by an object is s(t) = t^2 + 5t is 44m/s

) 2 Nour starts a new job on a salary of €20 000. She is given an annual wage rise of €500 at the end of every year until she reaches her maximum salary of €5 000. Find the total amount she earns (assuming no other rises), a in the first 10 years, b over 15 years and e state one reason why this may be an unsuitable model. c It is unlikely her salary will rise by the same amount each year. AU My question I can't understand this problem even if I saw the answer sheet. I II A

Answers

This model may not accurately reflect her actual salary progression.

a. The total amount Nour earns in the first 10 years:

Here, Nour's initial salary, P = €20,000

Annual salary increase, A = €500

Max. salary, M = €50,000

To calculate the total amount Nour earns in the first 10 years, we can use the formula for the sum of an arithmetic progression:

Sn = n/2 [2a + (n - 1) d]

Here, a = P

            = €20,000

        d = A

           = €500

        n = 10 years

Substituting the values, we get:

Sn = 10/2 [2(€20,000) + (10 - 1)(€500)]

Sn = 5[€40,000 + 9(€500)]

Sn = 5[€40,000 + €4,500]

Sn = 5(€44,500)

Sn = €222,500

So, Nour earns a total of €222,500 in the first 10 years.

b. The total amount Nour earns over 15 years:

Here, Nour's initial salary, P = €20,000

Annual salary increase, A = €500

Max. salary, M = €50,000

To calculate the total amount Nour earns in the first 15 years, we can use the formula for the sum of an arithmetic progression:

Sn = n/2 [2a + (n - 1) d]

Here, a = P

            = €20,000

d = A

  = €500

n = 15 years

Substituting the values, we get:

Sn = 15/2 [2(€20,000) + (15 - 1)(€500)]

Sn = 7.5[€40,000 + 14(€500)]

Sn = 7.5[€40,000 + €7,000]

Sn = 7.5(€47,000)

Sn = €352,500

So, Nour earns a total of €352,500 over 15 years.

c. One reason why this may be an unsuitable model: It is unlikely that Nour's salary will rise by the same amount each year as there may be external factors such as economic conditions, company performance, and individual performance that may affect the amount of her salary increase each year.

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y=tan(5x−4) dy/dx= (1) 5sec^2(4x−5) (2) 5sec^2(5x+4) (3) 5sec^2(5x−4)

Answers

The derivative of y = tan(5x - 4) is 5sec^2(5x - 4). This can be found using the chain rule, where dy/dx = dy/du * du/dx, and substituting the derivative of the tangent function and simplifying.

To find dy/dx for y = tan(5x - 4), we can use the chain rule. Let u = 5x - 4, so that y = tan(u). Then, by the chain rule,

dy/dx = dy/du * du/dx

To find du/dx, we can take the derivative of u with respect to x:

du/dx = 5

To find dy/du, we can use the derivative of tangent function:

dy/du = sec^2(u)

Substituting these values back into the chain rule equation, we get:

dy/dx = dy/du * du/dx = sec^2(u) * 5

Substituting back u = 5x - 4 and using the identity sec^2(x) = 1/cos^2(x), we get:

dy/dx = 5/cos^2(5x - 4)

Therefore, the answer is (3) 5sec^2(5x - 4).

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Algebra 2 B PPLEASE HELP WILL GIVE BRAINLYEST IM TAKING MY FINALS
evaluate csc 4 pi/3
a. -sqr 3/ 2
b. 2sqr 3/3
c.sqr3/2
d. -2sqr/3

Answers

Answer:

B

Step-by-step explanation:

Gl on your finals

Michelle has $8 and wants to buy a combination of dog food to feed at least two dogs at the animal shelter. A serving of dry food costs $1, and a serving of wet food costs $3. This system of inequalities models the scenario: x + 3y ≤ 8 x + y ≥ 2 Part A: Describe the graph of the system of inequalities, including shading and the types of lines graphed. Provide a description of the solution set. (4 points) Part B: Is the point (8, 2) included in the solution area for the system? Justify your answer mathematically. (3 points) Part C: Choose a point in the solution set and interpret what it means in terms of the real-world context. (3 points)

Answers

Part A: The shaded region represents the feasible region where both inequalities are satisfied simultaneously. It is below the line x + 3y = 8 and above the line x + y = 2.

Part B: The point (8, 2) is not included in the solution area.

Part C: The point (3, 1) represents one feasible solution that meets the constraints of the problem.

Part A: The graph of the system of inequalities consists of two lines and a shaded region. The line x + 3y = 8 is a solid line because it includes the equality symbol, indicating that points on the line are included in the solution set. The line x + y = 2 is also a solid line. The shaded region represents the feasible region where both inequalities are satisfied simultaneously. It is below the line x + 3y = 8 and above the line x + y = 2.

Part B: To determine if the point (8, 2) is included in the solution area, we substitute the x and y values into the inequalities:

8 + 3(2) ≤ 8

8 + 6 ≤ 8

14 ≤ 8 (False)

Since the inequality is not satisfied, the point (8, 2) is not included in the solution area.

Part C: Let's choose a point in the solution set, such as (3, 1). This point satisfies both inequalities: x + 3y ≤ 8 and x + y ≥ 2. In the context of the real-world scenario, this means that Michelle can buy 3 servings of dry food (x = 3) and 1 serving of wet food (y = 1) with her $8 budget. This combination of dog food allows her to feed at least two dogs at the animal shelter while staying within her budget. The point (3, 1) represents one feasible solution that meets the constraints of the problem.

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Solve each equation. Check each solution. 1 / b+1 + 1 / b-1 = 2 / b² - 1}

Answers

The given equation is 1 / (b+1) + 1 / (b-1) = 2 / (b² - 1) and it has no solutions.

To solve this equation, we'll start by finding a common denominator for the fractions on the left-hand side. The common denominator for (b+1) and (b-1) is (b+1)(b-1), which is also equal to b² - 1 (using the difference of squares identity).

Multiplying the entire equation by (b+1)(b-1) yields (b-1) + (b+1) = 2.

Simplifying the equation further, we combine like terms: 2b = 2.

Dividing both sides by 2, we get b = 1.

To check if this solution is valid, we substitute b = 1 back into the original equation:

1 / (1+1) + 1 / (1-1) = 2 / (1² - 1)

1 / 2 + 1 / 0 = 2 / 0

Here, we encounter a problem because division by zero is undefined. Hence, b = 1 is not a valid solution for this equation.

Therefore, there are no solutions to the given equation.

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2. (a) Find Fourier Series representation of the function with period 2π defined by f(t)= sin (t/2). (b) Find the Fourier Series for the function as following -1 -3 ≤ x < 0 f(x) = { 1 0

Answers

(a) The Fourier Series representation of the function f(t) = sin(t/2) with period 2π is: f(t) = (4/π) ∑[[tex](-1)^n[/tex] / (2n+1)]sin[(2n+1)t/2]

(b) The Fourier Series for the function f(x) = 1 on the interval -1 ≤ x < 0 is: f(x) = (1/2) + (1/π) ∑[[tex](1-(-1)^n)[/tex]/(nπ)]sin(nx)

(a) To find the Fourier Series representation of f(t) = sin(t/2), we first need to determine the coefficients of the sine terms in the series. The general formula for the Fourier coefficients of a function f(t) with period 2π is given by c_n = (1/π) ∫[f(t)sin(nt)]dt.

In this case, since f(t) = sin(t/2), the integral becomes c_n = (1/π) ∫[sin(t/2)sin(nt)]dt. By applying trigonometric identities and evaluating the integral, we can find that c_n = [tex](-1)^n[/tex] / (2n+1).

Using the derived coefficients, we can express the Fourier Series as f(t) = (4/π) ∑[[tex](-1)^n[/tex] / (2n+1)]sin[(2n+1)t/2], where the summation is taken over all integers n.

(b) For the function f(x) = 1 on the interval -1 ≤ x < 0, we need to find the Fourier Series representation. Since the function is odd, the Fourier Series only contains sine terms.

Using the formula for the Fourier coefficients, we find that c_n = (1/π) ∫[f(x)sin(nx)]dx. Since f(x) = 1 on the interval -1 ≤ x < 0, the integral becomes c_n = (1/π) ∫[sin(nx)]dx.

Evaluating the integral, we obtain c_n = [(1 - [tex](-1)^n)[/tex] / (nπ)], which gives us the coefficients for the Fourier Series.

Therefore, the Fourier Series representation for f(x) = 1 on the interval -1 ≤ x < 0 is f(x) = (1/2) + (1/π) ∑[(1 - [tex](-1)^n)[/tex] / (nπ)]sin(nx), where the summation is taken over all integers n.

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If 7 points are found on a circle, how many triangles can be
drawn using any 3 of these points as vertices?

Answers

There can be a total of 35 triangles that can be drawn using any 3 of the 7 points on a circle.

To determine the number of triangles that can be formed using 3 points on a circle, we can use the combination formula. Since we have 7 points on the circle, we need to choose 3 points at a time to form a triangle. Using the combination formula, denoted as "nCr," where n is the total number of points and r is the number of points we want to choose, we can calculate the number of possible triangles.

In this case, we have 7 points and we want to choose 3 points, so the calculation would be 7C3, which is equal to 7! / (3! * (7 - 3)!). Simplifying this expression gives us 35, indicating that there are 35 different combinations of 3 points that can be chosen from the 7 points on the circle.

Each combination of 3 points represents a unique triangle, so the total number of triangles that can be drawn using any 3 of the 7 points on the circle is 35.

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Given: The circles share the same center, O, BP is tangent to the inner circle at N, PA is tangent to the inner circle at M, mMON = 120, and mAX=mBY = 106.
Find mP. Show your work.
Find a and b. Explain your reasoning.

Answers

There is  mBOM + mBON = -60° and mBOM + mOXA + mOXB = 148°,

we can subtract these two equations to eliminate mBOM:  (mBOM + mOXA + m.

To find mP, a, and b, we will analyze the given information and apply the properties of circles and tangents.

First, let's focus on finding mP. We know that tangent lines to a circle from the same external point have equal lengths. In this case, the tangents are BP and PA, and they are tangent to the inner circle at points N and M, respectively.

Since tangents from the same external point are equal in length, we can conclude that BN = AM.

Next, we observe that triangles BON and AOM are congruent by the Side-Angle-Side (SAS) congruence criterion.

Therefore, we have:

mBON = mAOM (congruent angles due to congruent triangles)

mBON + mMON = mAOM + mMON (adding 120° to both sides)

mBOM = mAON (combining angles)

Now, we consider the angles in the outer circle. Since mAX = mBY = 106°, we can infer that mAXO = mBYO = 106° as well.

Furthermore, we know that the sum of the angles in a triangle is 180°. Hence, in triangle AXO, we have:

mAXO + mAOX + mOXA = 180°

106° + mAOX + mOXA = 180°

Simplifying, we find:

mAOX + mOXA = 74°

Similarly, in triangle BYO, we have:

mBYO + mBOY + mOYB = 180°

106° + mBOY + mOYB = 180

Simplifying, we find:

mBOY + mOYB = 74°

Now, we can analyze triangle PON. The sum of its angles is also 180°:

mPON + mOPN + mONP = 180°

Substituting known values, we have:

mPON + mBON + mOBN = 180°

mPON + mAOM + mBOM = 180°

Since we know that mBOM = mAON, we can rewrite the equation as:

mPON + mAOM + mAON = 180°

Substituting mBOM + mBON + mMON for mPON + mAOM + mAON (from earlier deductions), we get:

mBOM + mBON + mMON + mMON = 180°

Simplifying, we find:

2mMON + mBOM + mBON = 180°

Substituting the given value mMON = 120°:

2(120°) + mBOM + mBON = 180°

240° + mBOM + mBON = 180°

Simplifying further:

mBOM + mBON = -60°

Now, let's consider the angles in the outer circle again. Since mBOM + mBON = -60°, we have:

mBOM + mAXO + mOXA + mOXB + mBYO = 360°

mBOM + 106° + mOXA + mOXB + 106° = 360°

Simplifying, we find:

mBOM + mOXA + mOXB = 148°

Since mBOM + mBON = -60° and mBOM + mOXA + mOXB = 148°, we can subtract these two equations to eliminate mBOM:

(mBOM + mOXA + m

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Find the solution of the given initial value problem. ty′+4y=t^2−t+5,y(1)=2,t>0

Answers

The solution to the given initial value problem is y = (1/7)t³ - (1/6)t² + t + (29/42)t⁻⁴, obtained using the method of integrating factors.

To find the solution of the given initial value problem, we can use the method of integrating factors.

First, let's rearrange the equation to put it in standard form: y' + (4/t)y = t² - t + 5.

The integrating factor is given by the exponential of the integral of the coefficient of y, which in this case is 4/t. So, the integrating factor is e^(∫(4/t)dt).

To integrate 4/t, we can rewrite it as 4t⁻¹ and apply the power rule of integration. The integral becomes ∫(4/t)dt = 4∫(t⁻¹)dt = 4ln|t|.

Therefore, the integrating factor is e^(4ln|t|) = e^(ln(t⁴)) = t⁴.

Next, we multiply both sides of the equation by the integrating factor: t⁴ * (y' + (4/t)y) = t⁴ * (t² - t + 5).

This simplifies to t⁴ * y' + 4t³ * y = t⁶ - t⁵ + 5t⁴.

Now, we can rewrite the left side of the equation using the product rule of differentiation: (t⁴ * y)' = t⁶ - t⁵ + 5t⁴.

Integrating both sides with respect to t gives us t⁴ * y = (1/7)t⁷ - (1/6)t⁶ + (5/5)t⁵ + C, where C is the constant of integration.

Finally, we solve for y by dividing both sides by t⁴: y = (1/7)t³ - (1/6)t² + t + C/t⁴.

To find the particular solution that satisfies the initial condition y(1) = 2, we substitute t = 1 and y = 2 into the equation.

2 = (1/7)(1³) - (1/6)(1²) + 1 + C/(1⁴).

Simplifying this equation gives us 2 = 1/7 - 1/6 + 1 + C.

By solving for C, we find that C = 29/42.

Therefore, the solution to the initial value problem is y = (1/7)t³ - (1/6)t² + t + (29/42)t⁻⁴.

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The total cost of attending a university is $15,700 for the first year. A student's parents will pay one-fourth of this cost. An academic scholarship will pay $3,000. Which amount is closest to the minimum amount the student will need to save every month in order to pay off the remaining cost at the end of 12 months?

Answers

The minimum amount the student will need to save every month is $925.83.

To calculate this amount, we need to subtract the portion covered by the student's parents and the academic scholarship from the total cost. One-fourth of the total cost is $15,700 / 4 = $3,925. This amount is covered by the student's parents. The scholarship covers an additional $3,000.

To find the remaining amount, we subtract the portion covered by the parents and the scholarship from the total cost: $15,700 - $3,925 - $3,000 = $8,775.

Since the student needs to save this amount over 12 months, we divide $8,775 by 12 to find the monthly savings required: $8,775 / 12 = $731.25 per month. However, we need to round this amount to the nearest cent, so the minimum amount the student will need to save every month is $925.83.

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What is the solution of each system of equations? Solve using matrices.

a. [9x+2y = 3 3x+y=-6]

Answers

The solution to the given system of equations is x = 7 and y = -21.The solution to the given system of equations [9x + 2y = 3, 3x + y = -6] was found using matrices and Gaussian elimination.

First, we can represent the system of equations in matrix form:

[9 2 | 3]

[3 1 | -6]

We can perform row operations on the matrix to simplify it and find the solution. Using Gaussian elimination, we aim to transform the matrix into row-echelon form or reduced row-echelon form.

Applying row operations, we can start by dividing the first row by 9 to make the leading coefficient of the first row equal to 1:

[1 (2/9) | (1/3)]

[3 1 | -6]

Next, we can perform the row operation: R2 = R2 - 3R1 (subtracting 3 times the first row from the second row):

[1 (2/9) | (1/3)]

[0 (1/3) | -7]

Now, we have a simplified form of the matrix. We can solve for y by multiplying the second row by 3 to eliminate the fraction:

[1 (2/9) | (1/3)]

[0 1 | -21]

Finally, we can solve for x by performing the row operation: R1 = R1 - (2/9)R2 (subtracting (2/9) times the second row from the first row):

[1 0 | 63/9]

[0 1 | -21]

The simplified matrix represents the solution of the system of equations. From this, we can conclude that x = 7 and y = -21.

Therefore, the solution to the given system of equations is x = 7 and y = -21.

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Find the volume of a regular square pyramid with a base edge 12 and lateral edge 10. Round to the nearest tenth if necessary.

Answers

The volume of the regular square pyramid is approximately 38.4 cubic units.

To find the volume of a regular square pyramid, we can use the formula:

Volume = (1/3) * base area * height

In this case, the base of the pyramid is a square with an edge length of 12 units, and the lateral edge (slant height) is 10 units.

The base area of a square can be calculated as:

Base area = length of one side * length of one side = 12 * 12 = 144 square units

Now, we need to find the height of the pyramid. To do that, we can use the Pythagorean theorem in the right triangle formed by the base edge, half the diagonal of the base, and the lateral edge.

The half diagonal of the base can be calculated as half the square root of the sum of squares of the base edges:

Half diagonal = (1/2) * √[tex](12^2 + 12^2)[/tex] = (1/2) * √(288) = √(72) ≈ 8.49 units

Using the Pythagorean theorem:

[tex]Lateral edge^2 = Base edge^2 - (Half diagonal)^2[/tex]

[tex]10^2 = 12^2 - 8.49^2[/tex]

100 = 144 - 71.96

100 = 72.04

Now, we can solve for the height:

Height = √[tex](Lateral edge^2 - (Base edge/2)^2[/tex]) = √[tex](100 - 6^2[/tex]) = √(100 - 36) = √64 = 8 units

Now, we can substitute the values into the volume formula:

Volume = (1/3) * base area * height = (1/3) * 144 * 8 ≈ 38.4 cubic units

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(the sum of 5 times a number and 6 equals 9) translate the sentence into an equation use the variable x for the unknown number does anyone know the answer to this ?

Answers

The given sentence can be translated into the equation 5x + 6 = 9, where x represents the unknown number.

It is necessary to recognize the essential details and variables in order to convert the statement "the sum of 5 times a number and 6 equals 9" into an equation. In this case, the unknown number can be represented by the variable x.

The sentence states that the sum of 5 times the number (5x) and 6 is equal to 9. We can express this mathematically as 5x + 6 = 9. The left side of the equation represents the sum of 5 times the number and 6, and the right side represents the value of 9.

By setting up this equation, we can solve for the unknown number x by isolating it on one side of the equation. In this case, subtracting 6 from both sides and simplifying the equation would yield the value of x.

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1. A standard combination lock code consists 3 numbers. Each number can be anything from 0-39. To successfully open the lock, a person must turn the dial to each of the 3 numbers in sequence. A sample lock code would look like 12-28-3. How many possible lock combinations are there if: a. Numbers can repeat: (12-9-9 allowed) 4 b. Consecutive digits cannot repeat, (12-28-28 or 6-6-18 are not allowed, but 6-18-6 IS allowed) 2. A quiz consists of 6 questions. The instructor would like to create different versions of the quiz where the order of the problems are scrambled for each student. In how many ways can this be done? Me 3. A beauty pageant consists of 8 contestants. In how many ways can there be a winner and an alternate (runner up)? 4. The 26 letters of the alphabet are put in a bag and 3 letters are drawn from the bag. In how many different ways can 3 letters be drawn? 5. Refer to problem 4, In how many ways can 3 vowels be drawn from the bag? 6. Refer to problems 4 and S. If 3 letters are to be drawn from a bag, what is the probability the three letters will be vowels? 17

Answers

There are 64,000 possible lock combinations if numbers can repeat.

There are 7,920 possible lock combinations if consecutive digits cannot repeat.

If numbers can repeat, each digit in the lock code has 40 possible choices (0-39). Since there are three digits in the lock code, the total number of possible combinations is calculated by multiplying the number of choices for each digit: 40 * 40 * 40 = 64,000. Therefore, there are 64,000 possible lock combinations if numbers can repeat.

If consecutive digits cannot repeat, the first digit has 40 choices (0-39). For the second digit, we subtract 1 from the number of choices to exclude the possibility of the same digit appearing consecutively, resulting in 39 choices. Similarly, for the third digit, we also have 39 choices. Therefore, the total number of possible combinations is calculated as 40 * 39 * 39 = 7,920. Thus, there are 7,920 possible lock combinations if consecutive digits cannot repeat.

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