Answer:
Solve one of the equations for one of the variables. Let's solve the first equation for y: ...
Step 2: Substitute that equation into the other equation, and solve for x. ...
Step 3: Substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.
Answer:
wdym? .................
NEED HELP PLEASE WITH THIS
Answer:
y = 28x
Step-by-step explanation:
if you work backwards you need to find miles per gallon which is 140/5 which is 28. x is gallons of gas used so if you multiply x by 28 will be y, the amount of miles driven.
The price yesterday was $120 today it is $54 what is the percentage decrease.
Answer:
66
Step-by-step explanation:
Answer:
55%
Step-by-step explanation:
120-54=66
This means that the price decreased by 66
66/120 = 0.55
This means that the percentage of decrease is 55%
True or False: If f(x) = -3x^3 + 2(x + 2), then f(-2) = 24
Answer:
True
Step-by-step explanation:
When you plug in -2 for the x-values, it should be like this -3(-2)^3 + 2((-2)+2). When using the method of PEMDAS, you want to do the parentheses/exponents first since it is in order. -2 to the power of 3 is -8 for this case. Distribute 2 in -2 and 2 to get -4 + 4. Obviously. they will cancel in which you are left with -3(-8). Two negatives multiplied together equals a positive, so your final answer should be 24, in this case it is true.
Triangle ABC contains side lengths b=3 inches and c= 5 inches in two or more sentences describe whether or not it is possible for mangle B =45 degrees
Answer:
Since sine of all angles are always less than one, this shows there is no possible way to have an angle C. Thus it is impossible to have a triangle ABC with the given properties of side lengths b=3 inches and c= 5 inches to have angle B =45 degrees.
Step-by-step explanation:
In the attached drawing, each of the tic-marks are equal and
represent 1 inch each. The angle B has measure 45. We can
see by the arc that the line AC, which equals 3 inches, is
not long enough to reach the slanted side of the 45 angle.
Therefore triangle ABC is not possible. We can also show
by the law of sines that no triangle ABC with the given
properties in possible.
Please answer pls and ty
Answer:
Width = 66 inches
Step-by-step explanation:
Zelda has 300 inch roll of binding for a quilt.
The length must be 84 inches
We need to find its width. Let it is b.
Let us assume that the quilt is in the shape of rectangle. The perimeter of the rectangle is given by :
P = 2(l+b)
300 = 2(84+b)
150 = 84+b
b = 150-84
b = 66 inches
So, the required width is 66 inches.
rewrite the expression in the form a^n. (a^5)^2
Given that,
The expression is [tex](a^5)^2[/tex].
To find,
Rewrite the expression in the form of [tex]a^n[/tex].
Solution,
We have, [tex](a^5)^2[/tex].
We can use the property of exponent as follows :
[tex](a^m)^n=a^{mn}[/tex]
Here, m = 5 and n = 2
[tex](a^5)^2=a^{5\times 2}\\\\=a^{10}[/tex]
Hence, the final answer is [tex]a^{10}[/tex] where n = 10.
What integer gaining 3 pounds plz tell me
Answer:
i was about to answer but i forgot sorry
Step-by-step explanation:
Please welp more points!!!!
Nonrenewable energy resources include fossil fuels and nuclear power. What characteristics do all nonrenewable energy resources have in common?
I. They create some form of pollution as a byproduct.
II. They will eventually run out if they are continually used.
III. They formed from long-dead organisms.
IV. They can be used in most environments.
A. I, II, and IV only
B. I, II, III, and IV
C. II only
D. I and II only
Answer:
B) I, II, III, and IV
Step-by-step explanation:
What is the number that has a value 10 times the value of 0.009?
Answer:
0.09?
Step-by-step explanation:
0.009 x 10 is 0.09
Answer:
multiply 0.09 by 10 and that'd equal 0.09. A number 10 times greater then 0.009 is 0.09.
Step-by-step explanation:
solve quadratic x^2+6x+1=0
Answer: x = 3 ± √ 10
Jason bought 7 new baseball trading cards to add to his collection. The next day half of his collection. There are now only 30 cards left.
Answer:
8 cards
Step-by-step explanation:
Work Backwards:
30/2 is 15
15-7 is 8.
Hope this helps :D
Answer:
Step-by-step explanation:
Let x be the number of cards Jason had initially in his collection.
"Jason bought 9 new baseball trading cards to add to his collection"
x
+
9
is the equation because
x
is the initial number of cards he has and he bought another 9
"His dog ate half of his collection"
1
2
(
x
+
9
)
because
x
+
9
is what he had before his dog ate his cards and since his dog ate half, there is a
1
2
added to the equation
"42 cards left"
1
2
(
x
+
9
)
=
42
Since his dog ate half, he is left with half of his initial card collection.
x
+
9
=
42
×
2
x
+
9
=
84
x
=
84
−
9
x
=
75
The closing stock prices of 35 U.S. semiconductor manufacturers are given as follows. 8.625; 30.25; 27.625; 46.75; 32.875; 18,25; 5; 0.125; 2.9375; 6.875; 28.25; 24.25; 21; 1,5; 30.25; 71; 43.5; 49.25; 2.5625; 31; 16.5; 9.5; 18.5; 18; 9; 10.5; 16.625; 1.25; 18; 12.87; 7; 12.875; 2.875; 60.25; 29.25
a. In words, X =
b.
i. X =
ii. Sx =
iii. n =
c. Construct a histogram of the distribution of the averages. Start at x = -0.0005. Use bar widths of ten.
d. In words, describe the distribution of stock prices.
e. Randomly average five stock prices together. (Use a random number generator.) Continue averaging five pieces together until you have ten averages. List those ten averages
f. Use the ten averages from part e to calculate the following.
i. x =
ii. Sx =
g. Construct a histogram of the distribution of the averages. Start at x = -0.0005. Use bar widths of ten.
h. Does this histogram look like the graph in part c?
i. In one or two complete sentences, explain why the graphs either look the same or look different?
j. Based upon the theory of the central limit theorem, X ~ ( , )
Answer:
The answer would be A.
Step-by-step explanation: In order to find the answer you would need A
I actually have no idea, I'm guessing- ;-;
Simplify the equation by combining like
terms.
2x + 2x – 4y- y = 4x + [? ]y
Answer:
4x+(-5y)
Step-by-step explanation:
On holidays three friends decided to buy a Christmas tree for $96. They made a cash contribution of 3: 5: 8. The two friends who invested less decided to return the third friend's money so that their cash contributions became the same. What is the ratio of the money returned by the first person to the money returned by the second person
Answer: 7:1
Step-by-step explanation:
First off, we see that the contribution was divided into 16 parts (8+5+3). If the tree was $96, 96/16 = $6, so each individual part was $6.
First Person: 3(6) = $18
Second Person: 5(6) = $30
Third Person: 8(6) = $48
We know that after the two friends return the money, the $96 will have been split evenly between all three of them.
96/3 = 32 - each person pays $32 total
Because each person has to pay $32 total, the first person must return $14 and the second person must return $2. This means that the ratio is 14:2 which can be reduced to 7:1.
Person 1: 32-18 = 14
Person 2: 32-30 = 2
Person 3: 48-14-2 = 32. - check to see if we were correct, which we are because after two friends pay 3rd back, their total is also 32 dollars.
Victor wants to purchase a perpetuity paying 100 per year with the first payment due at the end of year 11. He can purchase it by either: (i) paying 90 per year at the end of each year for 10 years; or i) payıng K per year at the end of each year for the years and nothing for the next 5 years. Calculate K
Answer:
K = 151.9422481
Step-by-step explanation:
At the end of year 10, your perpetuity is worth 100/i
(1) is worth 90×s_{10%i}
So if you set them equal you get 90*[(1+i)^10 - 1]/i = 100/i or [(1+i)^10 - 1] = 10/9 or (1+i)^10 = 19/9 or i = 0.077583937
So now the question compare (1) to (2), at t = 0
(1) is worth 90×a_{10%i} = 90(1 - 1/(1.077583937)^10)/0.077583937 = 610.5441743
(2) is worth K×a_{5%i} = 4.018264714×K
Therefore K = 151.9422481
help now fast..................................
Answer:
C
Step-by-step explanation:
There are 6 units in the numberline, and 2 are shaded. So, 2/6 are shaded.
Whats type of account has a fixed interest rate, a term and a fixed date of
withdrawal? *
Answer:
A CD, or certificate of deposit, is a type of savings account with a fixed interest rate that's usually higher than a regular savings account, a fixed term length and a fixed date of withdrawal, known as the maturity date. You lock up funds in a CD for a term generally between three months and five years.
Step-by-step explanation:
Tyler had $25 in his bank account. Saving up for a new bike, he made
three deposits of $32 each. What was the total amount of money in
his account after making the three deposits?
HELPP PLEASE
During second period, Janet completed a grammar worksheet. She got 14 questions correct and 42 questions incorrect.
Part A: What percentage did Janet get correct
_________%
Part B: What percentage did Janet get incorrect?
A: 50%
B: 65%
C: 75%
D: 80%
Answer:
A=33.33
Step-by-step explanation:
Answer: Part A) 25%
Part B) 75%
Step-by-step explanation: Hope this helps.
Mr. Richards garden is shaped like a rectangle. The length of garden is 10 meters more than twice the width. What expression represents the length in meters of a fence needed to fully surround garden
Answer:
The expression for length of fence in meters is: 6w+20 meters
Step-by-step explanation:
Let l be the length and w be the width of the given garden
Then according to given statements
[tex]l = 2w+10[/tex] Eqn 1
As we have to find the length of fence to fully surround garden that means the perimeter has to be found.
The formula for perimeter is given by:
[tex]P = 2(length+width)[/tex]
Putting the values
[tex]P = 2(2w+10+w)\\P = 2(3w+10)\\P = 6w+20[/tex]
Hence,
The expression for length of fence in meters is: 6w+20 meters
Are the lines x− 2y= 4 and y= 2x − 2 parallel, perpendicular, or neither? Explain your answer. [ Select ] ; their [ Select ] [ Select ] the same and [ Select ] receiprocals.
Answer:
Neither.
Step-by-step explanation:
First we alter the first equation to match the second.
x - 2y = 4
2y = x - 4
y = x/2 - 2.
Next we compare the slopes
2x = 2
x/2 = 1/2
Their slopes are reciprocals, but they aren't opposites. Therefore they are neither parallel nor perpendicular.
Write -9/50 as a decimal number?
Answer: -0.18
Step-by-step explanation:
-9/50 is the same as -18/100. negative eighteen hundredths. so we write it as -0.18, because that fills into the hundredths place
Answer:
-0.18
Step-by-step explanation:
find the value of X in the triangle
Two sides of the triangle are the same length, so the two angles of the long side are identical.
The three inside angles total 180, so the sum of the 2 identical angles would equal: 180-70 = 110
x is one of those angles. X = 110/2 = 55 degrees.
X = 55
select all the rational numbers
Answer:
B and D
Step-by-step explanation:
Answer:
B and d hope it helps
Step-by-step explanation:
hope it helps
The rectangular front windshield of the bus has the length of 1.5√3 m and the width of 1.5 m . The wipers are attached to the bottom corners. If the length of each wiper is equal to the width of the windshield, find the percentage of the windshield that wipers can reach.
(Solve this task without using Trigonometry)
See the attached sketch. From their respective corners, each wiper sweeps out a portion of the total area of the windshield equal to the area of a quarter-circle with radius 1.5 m (shaded green), and they overlap in a half-lens-shaped region (shaded red). The area that the wipers together cover is equal to the sum of the green areas minus the area of the red overlap. It's easy to see that this red area is equal to the area of the highlighted circular segment (bordered in blue).
Not sure how exactly you can avoid finding the area of the segment without resorting to trigonometry, though... The radii AC and AD form an angle θ such that the segment has area
1/2 (1.5 m)² (θ - sin(θ))
but you can avoid mentioning the sine function by writing it as
1/2 (1.5 m)² (θ - √3/2)
which follows from
sin(θ) = 2 sin(θ/2) cos(θ/2) = 2 ((BD/2)/AB) ((AC/2)/AB)
and the fact that BD has length equal to the radii, since by the Pythagorean theorem
(AC/2)² + (BD/2)² = AB²
(whether this theorem falls under trigonometry is also up for debate)
You would need trig to find the measure of the angle θ as well, unless you just take for granted the fact that a triangle with side lengths 1.5√3/2, 1.5/2, and 1.5 (i.e. AC/2, BD/2, and AB), since they occur in a ratio of √3 : 1 : 2 is a 30°-60°-90° triangle, so that θ = 60° = π/3 rad.
At any rate, the percentage is about (2×(quarter-circle area) - (segment area))/(rectangle area) = 85.46%, since
• area of rectangle = (1.5 √3 m) • (1.5 m) ≈ 3.897 m²
• area of quarter-circle = π/4 (1.5 m)² ≈ 1.767 m²
• area of segment = 1/2 (1.5 m)² (π/3 - √3/2) ≈ 0.204 m²
Answer:
≈ 85.46%Step-by-step explanation:
Refer to attached
The area of coverage is the sum of two sectors of 60° and a triangle.
Find each area and calculate the percentage of covered region
Rectangle area:
A = 1.5*1.5√3 = 9√3/4 ≈ 3.8971Triangle height
h = √1.5² - (1/2*1.5√3)² = √1/4*1.5² = 1.5/2 = 3/4Since h is half of the hypotenuse, the opposite angle is 30°This leaves each sector 60°Triangle area
A = 1/2*1.5√3*3/4 = 9√3/16 ≈ 0.9742Sectors' area
A = 2*1/6*πr² = 1/3π(1.5)² = 3π/4 ≈ 2.3561Area covered by wipers
A = 0.9742 + 2.3561 = 3.3303Percentage of covered region:
3.3303/ 3.8971*100% ≈ 85.46%Complete the following statement. Percent is a fraction where parts make one whole.
Answer:
Percent is a fraction where the denominator is represented by 100 or 100 parts make one whole.
Step-by-step explanation:
I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!
A percentage is a fraction whose denominator is 100, or how many parts make one whole.
What is percent?A number or ratio that can be expressed as a fraction of 100 is called a percentage. Divide the number by its whole number and multiply it by 100 if we have to figure out the percentage of that number. Consequently, the percentage represents one part per hundred. The word "per 100" means "per percent." The number "%" is used to symbolize it.
For given statement
A fraction with 100 as the denominator is called a percent.
Thus, a whole is made up of 100 parts. The percentage represents the number of relevant parts out of a total of one hundred.
For instance, 10% is represented by the decimal number 0.10 or the fraction 10/100.
Similarly, the decimal equivalent of 25% is 0.25, or the fraction 25/100.
Because 100/100 equals 1, 100% corresponds to the number 1.
Hence the statement is Percent is a fraction where the denominator is represented by 100 or 100 parts make one whole.
Learn more about percent;
https://brainly.com/question/28840349
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Mel slides down waterslide A, and Victor slides down waterslide B. After 2 seconds, Mel was 50 feet in the air, and after 5 seconds, she was 35 feet in the air. After 1 second, Victor was 60 feet in the air, and after 4 seconds, he was 50 feet in the air. Who was descending at a faster rate?
Answer:
Mei descends faster
Mei's height decreases 5ft every second
Victor's height decreases 3.33 ft every second
Step-by-step explanation:
Given
Mel
[tex](x_1,y_1) = (2,50)[/tex]
[tex](x_2,y_2) = (5,35)[/tex]
Victor
[tex](x_1,y_1) = (1,60)[/tex]
[tex](x_2,y_2) = (4,50)[/tex]
Required
Who descend faster?
To do this, we simply calculate the slope/rate of both individuals
[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
For Mei:
[tex]m_1 = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
[tex](x_1,y_1) = (2,50)[/tex]
[tex](x_2,y_2) = (5,35)[/tex]
[tex]m_1 = \frac{35 -50}{5 - 2}[/tex]
[tex]m_1 = \frac{-15}{3}[/tex]
[tex]m_1 = -5[/tex]
Mei descends at 5ft per second
For Victor:
[tex]m_2 = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
[tex](x_1,y_1) = (1,60)[/tex]
[tex](x_2,y_2) = (4,50)[/tex]
[tex]m_2 = \frac{50-60}{4 - 1}[/tex]
[tex]m_2 = \frac{-10}{3}[/tex]
[tex]m_2 = -3.33[/tex]
Victor descends at 3.33ft per second
By comparison:
Mei descends faster
Answer:
Mel: -5, 5
Victor: -10/3, 10,3
Edge 2021
d. One holding pen uses 500 feet of fence
wire and 100 feet of tie wire. A farmer
uses a combined length of 1,000 yards of
wire. What length of tie wire was used?
Help me
9514 1404 393
Answer:
500 ft or 166 2/3 yards
Step-by-step explanation:
The tie wire is (100)/(100 +500) = 1/6 of the total length of wire used. If 1000 yards of wire is used, 1/6 of that amount can be expected to be tie wire. That is ...
(1000 yd)/6 = 166 2/3 yd = 500 ft
the question is in the photo
Determine any data values that are missing from the table, assuming that the data represent a linear function.
a. Missing x:13 Missing y:20
b. Missing x:13 Missing y:19
c. Missing x:11 Missing y:20
d. Missing x:11 Missing y:19
Answer:
d. Missing x:11 Missing y:19Step-by-step explanation:
It can be determined that the function is:
y = 0.5x + 12.5So missing x is:
18 = 0.5x + 12.5 ⇒ 0.5x = 5.5 ⇒ x = 11Missing y is:
y = 13*0.5 + 12.5 = 19Missing numbers are:
x= 11 and y = 19Correct choice is d.
FIRST METHOD
Answer:
Missing x = 11Missing y = 19Step-by-step explanation:
Given the table
x y
7 16
9 17
Missing x 18
13 Missing y
From the table, it is clear that y-values are incremented by 1 unit and the x-values are incremented by 2 units.
i.e.
y = 17-16 = 1
y = 18-17 = 1
as 19-18 = 1
Thus,
Thus, the value of Missing y = 19
also the x-values increment by 2.
i.e.
x = 9-7 = 2
as x = 11 - 9 = 2
Thus, Missing x = 11
Therefore,
Missing x = 11Missing y = 192ND METHOD
Given that the table represents a linear function, so the function is a straight line.
Taking two points
(7, 16)(9, 17)Finding the slope between (7, 16) and (9, 17)
[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]\left(x_1,\:y_1\right)=\left(7,\:16\right),\:\left(x_2,\:y_2\right)=\left(9,\:17\right)[/tex]
[tex]m=\frac{17-16}{9-7}[/tex]
[tex]m=\frac{1}{2}[/tex]
Using the point-slope form to determine the linear equation
[tex]y-y_1=m\left(x-x_1\right)[/tex]
where m is the slope of the line and (x₁, y₁) is the point
substituting the values m = 1/2 and the point (7, 16)
[tex]y-y_1=m\left(x-x_1\right)[/tex]
[tex]y-16=\frac{1}{2}\left(x-7\right)[/tex]
Add 16 to both sides
[tex]y-16+16=\frac{1}{2}\left(x-7\right)+16[/tex]
[tex]y=\frac{1}{2}x+\frac{25}{2}[/tex]
Thus, the equation of the linear equation is:
[tex]y=\frac{1}{2}x+\frac{25}{2}[/tex]
Now substituting y = 18 in the equation
[tex]18=\frac{1}{2}x+\frac{25}{2}[/tex]
Switch sides
[tex]\frac{1}{2}x+\frac{25}{2}=18[/tex]
subtract 25/2 from both sides
[tex]\frac{1}{2}x+\frac{25}{2}-\frac{25}{2}=18-\frac{25}{2}[/tex]
[tex]\frac{1}{2}x=\frac{11}{2}[/tex]
[tex]x=11[/tex]
Thus, the value of missing x = 11 when y = 18
Now substituting x = 13 in the equation
[tex]y=\frac{1}{2}\left(13\right)+\frac{25}{2}[/tex]
[tex]y=\frac{13}{2}+\frac{25}{2}[/tex]
[tex]y=\frac{13+25}{2}[/tex]
[tex]y=\frac{38}{2}[/tex]
[tex]y = 19[/tex]
Thus, the value of missing y = 19 when x = 13
Hence, we conclude that:
The value of missing x = 11The value of missing y = 19Hence, option D is true.