The value of y is directly proportional to the value of x.
If y = 12 when x = 15, what is the value of x when y = 40?
A.
12
B. 32
C.43
D.
50

Answers

Answer 1

Answer:

D

Step-by-step explanation:

Given y is directly proportional to x then the equation relating them is

y = kx ← k is the constant of proportion

To find k use the condition y = 12 when x = 15

12 = 15k ( divide both sides by 15 )

0.8 = k

y = 0.8x ← equation of proportion

When y = 40 , then

40 = 0.8x ( divide both sides by 0.8 )

50 = x → D


Related Questions

What is the range
of 98, 99, 100,
90, 98, 100?

Answers

Answer:

10

Step-by-step explanation:

Increasing order:-

90,98,98,99,100,100

Range = Highest term - Lowest term

Range = 100 - 90

Range = 10

Hence,

Range of the given term is 10

Answer:

10

Step-by-step explanation:

The data set in ascending order:

90, 98, 98, 99, 100

It has min = 90, max = 100

The range is the difference between min and max:

100 - 90 = 10

Which pairs of numbers are equivalent?

Select each correct answer.


15/8 and 1 7/8

35/4 and 8 3/4

23/6 and 4 1/6

11/4 and 2 1/2

40/12 and 3 1/3
i need this fast

Answers

Answer:

4 an 5

Step-by-step explanation:

Answer:

15/8 and 1 7/8

35/4 and 8 3/4

40/12 and 3 1/3

Step-by-step explanation:

15/8 and 1 7/8:

Convert the improper fraction into a mixed number: [tex]\frac{8+7}{8}[/tex]

Calculate the sum or difference: [tex]\frac{15}{8}[/tex]

Check equivalency: True

Answer: True

=================================================================

35/4 and 8 3/4

Convert the improper fraction into a mixed number:  [tex]\frac{8*4+3}{4}[/tex]

Calculate the product or quotient: [tex]\frac{32+3}{4}[/tex]

Calculate the sum or difference: [tex]\frac{35}{4}[/tex]

Check equivalency: True

Answer: True

================================================================

23/6 and 4 1/6

Convert the improper fraction into a mixed number: [tex]\frac{4*+1}{6}[/tex]

Calculate the product or quotient: [tex]\frac{24+1}{6}[/tex]

Calculate the sum or difference: [tex]\frac{25}{6}[/tex]

Check equivalency: False

Answer: False

===============================================================

40/12 and 3 1/3

Reduce the fraction: 10/3

Convert the improper fraction into a mixed number: [tex]\frac{3*+1}{3}[/tex]

Calculate the product or quotient: [tex]\frac{9+1}{3}[/tex]

Calculate the sum or difference: [tex]\frac{10}{3}[/tex]

Check equivalency: True

Answer: True

================================================================

11/4 and 2 1/2

Convert the improper fraction into a mixed number: [tex]\frac{2*+1}{2}[/tex]

Calculate the product or quotient: [tex]\frac{4+1}{2}[/tex]

Calculate the sum or difference: [tex]\frac{5}{2}[/tex]

Check equivalency: False

Answer: False

What is the greatest common factor of 48, 72 and 52? A.2 B.4 C.8 D.16

Answers

the answer is 4 since 4 is common in all the three digits

B).4

Explain in detail how would you plot the points -1, 5, -2.5, -3, and 2 on the number line. What is the order of the numbers?

PLEASE HELP!!
WILL GIVE BRAINLIEST
ANY WRONG ANSWERS OR LINKS WILL BE REPORTED!!!

Answers

Answer:

-3 -2.5 -1 2 5

Step-by-step explanation:

In order to do this you can look on a number line or you could look at the numbers carefully and the biggest number with a minus is what you start with and end it with a positive number.

-3/-4 in simplest form

Answers

3/4

a double negative equals a positive

Answer:

3/4 is your answer

Step-by-step explanation:

it takes 3 brick layers 2 hours to build a wall how long would it take 4 brick layers
please show steps in ratio​

Answers

Answer:

Ratios are basically proportions so in this scenario

We can make it…

brick layers : hours

We’re given the first one which is

3:2

Whilst the one we need to find is only given for brick

For the unknown hours we can make it “x”

4: x

Now we have 2 ratios

3:2

4:x

Now these are fractions and we can make them equal to each other by

3/2 = 4/x

Now cross multiply to solve for x

3x=8

2 2/3 = x

So 2 2/3 hours

Dylan brought his DVD set of The Sleuth in the Shadows Saga to a secondhand store to sell. He was paid cash for all 4 DVDs in the set. Before he left, Dylan used $16.40 of his earnings to purchase a backpack. He had $3.60 remaining. How much did Dylan receive for each DVD in the set?​

Answers

Answer: 5$

Step-by-step explanation:

In order to get the total, you would need to add the total spen on the backpack and the amount remaining and then you would divide that by 4 ( for all of the DVDs in the set)

ℎ ℎ 22 2 22 2− 3 +10

Answers

Answer:

wouldn't the answer be 9

Step-by-step explanation:

Answer:

22h^2 + 33 (added) .    h⋅h⋅22,2,22,2−3+10 (subtracted)

Step-by-step explanation:

I don't understand what you want so I will list lots of answers hopefully it helps. Please message under my answer for more solutions so I can help you but I hope this started to help you.

If it takes 7 people 8 days to dig a ditch, how many people would it take to dig the ditch in 1/2 day

Answers

Answer:

112

Step-by-step explanation:

8 days when fitted into a half (1/2) gives you 16

7 times 16 gives the answer of 112 (people needed)

Answer:

112 people to do it in 1/2 of a day

Step-by-step explanation:

7 · 8 = 56

56 ÷ ½ = 112 people to dig a ditch in 1/2 of a day

Please dont leave any links

Answers

Answer:

a

Step-by-step explanation:

what is the coordinate of the point A?

A) - 0.04

B) - 0.03

C) - 0.02

D) 0​

Answers

B. 0.03

i just looked at it like a regular number line and thought in between 2 and 4 is 3
so they only correct answer is B

Bonie reduced the size of a photo to a height of 4 in. what is the new width if it was orginally 16 in tall and 8 in wide?​

Answers

Answer:

i need help with this one too

Step-by-step explanation:

Answer:

2 inches

Step-by-step explanation:

I hope it helps you!

b/4 + 2 = -1



Please help, I’ll give brainliest to whoever answers correct first.

Answers

Answer:

[tex]\frac{b}{4}+2=-1[/tex]

Subtract 2 from both sides:

[tex]\frac{b}{4}+2-2=-1-2[/tex]

[tex]\frac{b}{4}=-3[/tex]

Multiply 4 to both sides:

[tex]4*\frac{b}{4} =-3*4[/tex]

[tex]b=-12[/tex]

What does the y-intercept represent in this situation? The weight of oats, in pounds, in the final mixture. The weight of hay, in pounds in the final mixture. The amount of protein the feed has if no oats are added. The amount of protein the feed has if no hay is added.

Answers

Your welcome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

The y-intercept in the situation given represents: C. The amount of protein the feed has if no oats are added.

What is the Y-intercept of a Linear Function?

The y-intercept of a linear function is the initial value or the value of y when x equals 0.

The initial value in this situation is the amount of protein in the feed when the amount of oats added is 0.

Therefore, the y-intercept represents: C. The amount of protein the feed has if no oats are added.

Learn more about the y-intercept on:

https://brainly.com/question/10700419

#SPJ6

what is the slope?
what is the y-intercept?
is it positive or negative?

Answers

Answer:

A positive y-intercept means the line crosses the y-axis above the origin, while a negative y-intercept means that the line crosses below the origin.

Step-by-step explanation:

Answer:

Slope = m = 2

b = 0

Positive

Step-by-step explanation:

Use formula y=mx+b

y= 2X = 2X+0

m is the number multiplied by X

m = 2

m is greator than zero so the slope is positive

when b is not shown then it is zero

Find the measures of the interior angles of the triangle.

Answers

Answer:

Imagine that scientists have just discovered a non-bird dinosaur skeleton. They want to know whether the dinosaur was closely related to birds. What features in ...

Step-by-step explanation:

A yard is 33.22 m long and 17.2 m wide.
(a) What length of fence must be purchased to enclose the entire yard?

(b) What area must be covered if the yard is to be fertilized? PLEASE HELP FOR A TEST

Answers

Answer:

A. = 100.84 m

B. 571.384 cubic m

Step-by-step explanation:

a.

33.22+33.22+17.2+17.2 =100.84m

b.

33.22x17.2 = 571.384 m2

ABC is a triangle
AB = AC and BA is parallel to CD
Work out the size of the angle marked x

Answers

Step-by-step explanation:

so as ∆BCE is a right angled triangle

angle BEC = 90°

angle CBE = 22° (given)

apply angle sum property of triangle

so according to that

BCE + CBE + ECB = 180

22° + 90° + ECB = 180

102° + ECB = 180

ECB = 180 - 102

ECB = 78°

and also we know, that exterior angle of a triangle is equal to 2 interior angle of triangle,

so ,

x = 78°

hope this answer helps you dear! take care

Figure ABCD is transformed to figure A prime B prime C prime D prime, as shown: A coordinate grid is shown from negative 5 to 0 to 5 on both x- and y-axes. A polygon ABCD has A at ordered pair 2, 3, B at ordered pair 4, 4, C at ordered pair 3, 1, D at ordered pair 2, 1. A polygon A prime B prime C prime D prime has A prime at ordered pair negative 1, 3, B prime at ordered pair negative 3, 4, C prime at ordered pair negative 2, 1, D prime at ordered pair negative 1, 1. Which of the following sequences of transformations is used to obtain figure A prime B prime C prime D prime from figure ABCD? Counterclockwise rotation by 90 degrees about the origin followed by a translation to the right by 1 unit Counterclockwise rotation by 90 degrees about the origin followed by a translation to the left by 1 unit Reflection about the x-axis followed by a translation to the left by 1 unit Reflection about the y-axis followed by a translation to the right by 1 unit

Answers

1 2 and 4 are the corrects answers I’m sorry if wrong

4,00
.
5. Mr. Brown has $410,000 in a retirement account that earns 3.85% interest each year. Find the
amount earned each year by his investment.

Answers

Answer:

9 dollars

Step-by-step explanation:

cuz 9 dollars

Please help I’m begging you

Answers

Answer:

y = 9

Step-by-step explanation:

The line "y = 9" is parallel to the x-axis and passes through (0,9).

What are the values of the two angles?

Answers

Answer:

the angle 3x is 42 degrees, the angle 12x-30=138 degrees

Step-by-step explanation:

first, write an equation to represent the problem.

3x+(12x-30)=180

3x+12x=210

15x=210

x=14

Answer:

See below:

Step-by-step explanation:

Hello! My name is Galaxy and I will be helping you today. I hope you are having a nice day.

We can solve this problem in 2 steps, one being Theory and the second being Solving. I'll start off with Theory.

Theory

There are many theorems in Geometry, from the very simple to the very complex, you also have got the standard information that is usually known by many people.

In this case, we can see that it is a Supplementary Angle. We know that Supplementary Angles add up to 180 degrees and Complementary Angles add up to 90 degrees.

Now that we know that we can solve the problem.

Solving

So, we know that both angles have to add up to 180 degrees because the line is a straight line and that means that the angles on it must be 180 degrees.

Since we know this, we can state the following equation:

[tex]3x+12x-30=180[/tex]

We can say this due to the rule of Supplementary angles adding up to 180 degrees.

We can now use Algebra to simplify the equation:

[tex]3x+12x-30=180\\3x+12x=210\\15x=210\\x=14[/tex]

After doing algebra we can see that x s equal to 14 degrees, we can check our answers by putting that back into the equation.

[tex]3(14)+12(14)-30=180?\\42+168-30=180?\\210-30=180?\\180=180[/tex]

We have proven that our answer is correct, therefore the answer is [tex]x=14[/tex] degrees.

Cheers!

Please help I need the answer quickly.​

Answers

Answer:

r = ± [tex]\sqrt{q^2-p^4[/tex]

Step-by-step explanation:

p² = [tex]\sqrt{q^2-r^2}[/tex] ( square both sides )

(p² )² = q² - r²

[tex]p^{4}[/tex] = q² - r² ( subtract q² from both sides )

[tex]p^{4}[/tex] - q² = - r² ( multiply through by - 1 )

q² - [tex]p^{4}[/tex] = r² ( take square root of both sides )

± [tex]\sqrt{q^2-p^4}[/tex] = r

Given: ΔАВС, m∠ACB = 90° CD ⊥ AB , m∠ACD = 60° BC = 6 cm, find the length of AD

Answers

im  not sure sorryyyyyyyyyyyyyyy

Help me slove this -> f(x) = x + 2



f(8) =

Answers

Answer:

f(8)=10

Step-by-step explanation:

f(8) would mean x=8.

So you could replace x with 8 in the equation.

f(8)=8+2

=f(8)=10

I hope this helped!

Factor the following polynomial completely. x2n – y2n

Answers

Answer:

(x/y)^2n-2n

(x/y)⁰

=1

since any number raised to power of 0 is 1

if i can get 4 tastykake snack cakes. 4 for $5.00 how much would it be if i get 2 tastykake snack cakes?

Answers

Answer:

2.50

Step-by-step explanation:

If 4= $5.00

then divided 5.00 by 4=1.25

so 1 = 1.25

1.25x2=2.50

Therefore 2 tastykake snack cakes = $2.50

Answer:

The answer is 2.5

Step-by-step explanation:

5 divided by 4 = 1.25

1.25 times 2 = 2.5

brainliest :)

Write your answer as a decimal. If the decimal has more than 2 decimal places, round to 2 decimal places.

Answers

Where’s the question??

A student solved a system of equations by elimination. The answer is not correct. Describe the error in the solution.

Original Problem:

3x−2y=8

x+y=2

Student Work:

3x−2y=8

2x+2y=2

5x=10

x=2

Answers

The student went from x+y = 2 to 2x+2y = 2, which is not correct. They multiplied the left side by 2, but forgot about the right hand side.

They should have gone from x+y = 2 to 2x+2y = 4 after multiplying both sides by 2.

So they should have this new equivalent system

[tex]\begin{cases}3x-2y = 8\\2x+2y = 4\end{cases}[/tex]

Add straight down and we end up with the new equation 5x = 12 which solves to x = 12/5 = 2.4

Use that x value to solve for y. You should get y = -2/5 = -0.4

Charlie is flying a kite one afternoon and steps on the end of the string to have his
hands free to take a picture. The string is 135 feet long and forms a 68-degree angle
with the ground. How high is his kite at this time? Round to the nearest foot and
enter the number only.

I need the answer quick please!

Answers

Answer:

125.1698 Ft

Step-by-step explanation:

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