Please help!!!!!!!!!!!!!!!!!!!!!!!

Answer:

no

Step-by-step explanation: the unit rate for 3 in 15 mins is 1 every 5 minutes.

the unit rate for the second one would be 1 for every 4 however

Answer:

No those rates are not proportionate

Step-by-step explanation:

15 divided by 3 = 5

20 divided by 5 = 4

Therefor proving that it took the person who did 5 levels took less time per level than the person who did 3.

Answer:

$3240 I believe

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

In 70/5 the dividend is 70 and the divisor is 5 .

First draw a number line from zero to the dividend.

Next, starting from 70 skip count by the divisor backwards till you reach 0.

The numbers of skips taken to reach zero is the result, also called, the quotient. In this case there are 14 skips .

9514 1404 393

Answer:

  4 yd/min

Step-by-step explanation:

Change 1 hour to 60 minutes.

  (240 yd)/(1 h) = (240 yd)/(60 min) = 4 yd/min

Answer:

x=3

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

14+5x=−5(x−8)+4

14+5x=(−5)(x)+(−5)(−8)+4(Distribute)

14+5x=−5x+40+4

5x+14=(−5x)+(40+4)(Combine Like Terms)

5x+14=−5x+44

5x+14=−5x+44

Step 2: Add 5x to both sides.

5x+14+5x=−5x+44+5x

10x+14=44

Step 3: Subtract 14 from both sides.

10x+14−14=44−14

10x=30

Step 4: Divide both sides by 10.

10x/10 = 30/10

Answer:

x=3

Step-by-step explanation:

1. Rearrange terms

2. Distribute

3. Add the numbers

4. Subtract14 from both sides of the equation

5. Simplify

Answer:

perimeter= 28

area=33

Step-by-step explanation:

Answer:

1&3 are supplementary

3&6 are congruent

4&5 are supplementary

2&3 are congruent

1&6 are supplementary (not sure about this one)

Step-by-step explanation:

Answer: (B) x^3

Explanation:

If you compare the graphs of

all on the interval -1 < x < 0, you'll find that y = x^3 is the smallest when x = -1

Squaring a negative number leads to a positive result, and similarly that happens with x^4 as well. This is because x^4 = (x^2)^2.

Plugging x = -1 into x^3 leads to y = -1 as a result.

Answer:

The specificity of this test is expressed as:________

70%.

Step-by-step explanation:

a) Data and Calculations:

TEST RESULTS       Disease Present    Disease Absent      Total

Positive for Factor X      40                            60                    100

Negative for Factor X    10                            140                   150

Total                              50                           200                  250

Negative for X and Disease Absent = 140/200 * 100

= 0.7 * 100

= 70%

b) The specificity refers to the percentage of people who test negative for a specific disease among a group of people who do not have the disease. No test is 100% specific because some people who do not have the disease X will test positive for it (false positive).  Therefore, we are testing for the true negative, that the 140 people who tested out of the 200 people who do not have the disease.

Answer:

option A) Agree, because the solutions are the same is correct.

Step-by-step explanation:

FIRST SYSTEM

[tex]6x + y= 2[/tex]

[tex]-x-y=-3[/tex]

solving the system

[tex]\begin{bmatrix}6x+y=2\\ -x-y=-3\end{bmatrix}[/tex]

[tex]\mathrm{Multiply\:}-x-y=-3\mathrm{\:by\:}6\:\mathrm{:}\:\quad \:-6x-6y=-18[/tex]

[tex]\begin{bmatrix}6x+y=2\\ -6x-6y=-18\end{bmatrix}[/tex]

adding the equation

[tex]-6x-6y=-18[/tex]

[tex]+[/tex]

[tex]\underline{6x+y=2}[/tex]

[tex]-5y=-16[/tex]

so the system becomes

[tex]\begin{bmatrix}6x+y=2\\ -5y=-16\end{bmatrix}[/tex]

solve -5y for y

[tex]-5y=-16[/tex]

Divide both sides by -5

[tex]\frac{-5y}{-5}=\frac{-16}{-5}[/tex]

simplify

[tex]y=\frac{16}{5}[/tex]

[tex]\mathrm{For\:}6x+y=2\mathrm{\:plug\:in\:}y=\frac{16}{5}[/tex]

[tex]6x+\frac{16}{5}=2[/tex]

subtract 16/5 from both sides

[tex]6x+\frac{16}{5}-\frac{16}{5}=2-\frac{16}{5}[/tex]

[tex]6x=-\frac{6}{5}[/tex]

Divide both sides by 6

[tex]\frac{6x}{6}=\frac{-\frac{6}{5}}{6}[/tex]

[tex]x=-\frac{1}{5}[/tex]

Therefore, the solution to the FIRST SYSTEM is:

[tex]x=-\frac{1}{5},\:y=\frac{16}{5}[/tex]

SECOND SYSTEM

[tex]2x-3y = -10[/tex]

[tex]-x-y=-3[/tex]

solving the system

[tex]\begin{bmatrix}2x-3y=-10\\ -x-y=-3\end{bmatrix}[/tex]

[tex]\mathrm{Multiply\:}-x-y=-3\mathrm{\:by\:}2\:\mathrm{:}\:\quad \:-2x-2y=-6[/tex]

[tex]\begin{bmatrix}2x-3y=-10\\ -2x-2y=-6\end{bmatrix}[/tex]

[tex]-2x-2y=-6[/tex]

[tex]+[/tex]

[tex]\underline{2x-3y=-10}[/tex]

[tex]-5y=-16[/tex]

so the system of equations becomes

[tex]\begin{bmatrix}2x-3y=-10\\ -5y=-16\end{bmatrix}[/tex]

solve -5y for y

[tex]-5y=-16[/tex]

Divide both sides by -5

[tex]\frac{-5y}{-5}=\frac{-16}{-5}[/tex]

Simplify

[tex]y=\frac{16}{5}[/tex]

[tex]\mathrm{For\:}2x-3y=-10\mathrm{\:plug\:in\:}y=\frac{16}{5}[/tex]

[tex]2x-3\cdot \frac{16}{5}=-10[/tex]

[tex]2x=-\frac{2}{5}[/tex]

Divide both sides by 2

[tex]\frac{2x}{2}=\frac{-\frac{2}{5}}{2}[/tex]

Simplify

[tex]x=-\frac{1}{5}[/tex]

Therefore, the solution to the SECOND SYSTEM is:

[tex]x=-\frac{1}{5},\:y=\frac{16}{5}[/tex]

Conclusion:

As both systems of equations have the same solution.

Therefore, we conclude that Albert is right when says that the two systems of equations shown have the same solutions.

Hence, option A) Agree, because the solutions are the same is correct.

Answer:

1)

Step-by-step explanation:

1 is the answer

I believe

Answer:

.34, 45, 13/25 im pretty sure

Step-by-step explanation:

Answer:

$374

Step-by-step explanation:

First you need to find how much money does the back pay per year

$200*7.25

=1450

1450/100

=14.5

Secondly you need to find how much does Catherine have in 12 years

14.5*12 years

=$174

Lastly add the money she already had 12 years ago to how much the bank payed in that 12 years

$200+$174

=$374

Answer:

x times x is x^2 for first area. second area is 3 times that so 3x times 3x you get 9x^2 for the second area. 9 - 1 times 100% would then be 800% larger.

Answer:

34 652 is the number.Know find the ten place which is the (5).

Answer:

The cat weighs 2860 g more

Step-by-step explanation:

Convert the cats weight (3.1 kg) to grams.

Subtract the cats weight and the parakeets weight to find total.

In this case 3100 g (cats weight) - 240 g (parakeets weight) = 2860 g

Answer:

no image no answer, so the answer is

Step-by-step explanation:

select the values that make the statement true.

FAX

Answer:

24 ÷ ( 8 - 2 )

= 24 ÷ 6

= 4

so, 4 is the answer

Answer:

on your question it says “=“ but on the picture it says “÷”

so for 24=(8-12) it would be 30

and for 24÷ (8-12) it would be -6

Step-by-step explanation:

Hope this helps, have a good day

Answer:

Yes, (3x + 2)(x + 1).

Step-by-step explanation:

1. You're going to need to find two numbers that add to equal 5. The best option here is 2 and 3.

2. Separate the equation into groups. Right now, you have [tex]3x^2 + 5x + 2[/tex]. To separate into groups, you write  [tex](3x^2 + 3x) + (2x + 2)[/tex].

3. Now, from the first set of parenthesis, you can factor out 3x. This gets you [tex]3x(x + 1)[/tex]. The second set of parenthesis you can factor out the 2. This gets you [tex]2(x+1).[/tex]

4. Now, you see that you have (3x + 2)(x + 1).

Hope this helps! Let me know if you have any questions.

Answer:

f(x) = x² + 5

General Formulas and Concepts:

Algebra I

Step-by-step explanation:

Step 1: Define

y - x² = 5

Step 2: Rewrite

Answer:

Step-by-step explanation:

1 no.. not continuous

2no.. not continuous

3 yes , over a certain range it is

4no b/c it fails the vertical line test.. there is more than one point on the x axis

5no  multiple point on the x axis and not continuous

6 yes, over a certain range

Answer:

|x − 40| ≤ 7.5.

Step-by-step explanation:

The absolute value inequality |x − 40| ≤ y models the relationship between the acceptable weights of the suitcase and the amount it can vary.

If the suitcase weight can vary up to 7.5 pounds, then 7.5 can be substituted for y in the inequality:

|x − 40| ≤ 7.5.

This inequality can be used to find the range of acceptable weights of the suitcase.

Answer:

a. The count of rolling an odd number from a sample proportion size of 100 can be approximated with a normal distribution.

Step-by-step explanation:

Whenever we roll a fair dice, the possible outcomes are { 1, 2, 3, 4, 5, 6}. In this three numbers are even numbers, i.e. {2, 4, 6}.

The probability of getting an even number is [tex]$p (\text{even}) =\frac{3}{6} = \frac{1}{2}$[/tex]

Since each of the rolls is independent and each probability of getting even remains the same.

Using the central limit theorem, the sampling distribution of a large sample, usually more than 30 can be approximated by the normal distribution. A single roll of an even or odd number cannot be approximated by a normal  distribution, it follows the Binomial distribution.

If number of rolls are large, then a normal approximation can be used.

Answer:

The count of rolling an odd number from a sample proportion size of 100 can be approximated with a normal distribution.

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

PEMDAS MATH

Answer:

The missing value is 1

Step-by-step explanation:

We need to find the missing value, if the expression is equal to 12.

The given expression is: [tex]\frac{(8+?)}{\frac{3}{4} }[/tex]

and the expression is equal to 12, so we can write: [tex]\frac{(8+?)}{\frac{3}{4} } = 12[/tex]

Solving to find the missing term

[tex]\frac{(8+?)}{\frac{3}{4} } = 12\\(8+?) \div (\frac{3}{4})=12\\Converting\:division\:sign\:to\:multiplication\:and\:reciprocating\:the\:term\\ (8+?) \times (\frac{4}{3})=12\\8+?=12 \times \frac{3}{4}\\8+?=3 \times 3\\8+? = 9\\? = 9-8\\?=1[/tex]

So, the missing value is 1