The variables x and y vary directly. Use the values to find the constant of proportionality, k. Then write an equation that relates x and y.

y=72; x=3

Answers

Answer 1

y = kx

Replace y and x to solve for k:

72 = 3k

Divide both sides by 3:

k = 24

Now replace k with 24:

y = 24x

Answer 2

The proportionality constant [tex]k=\frac{1}{24}[/tex], and the equation that relates [tex]x[/tex] and [tex]y[/tex] is [tex]x=\frac{1}{24}y\text{ or } y=24x[/tex]

Since [tex]x[/tex] and [tex]y[/tex] are related by direct proportion,

[tex]x \text{ }{\displaystyle \propto}\text{ }y \implies x=ky[/tex]

where [tex]k[/tex] is our proportionality constant. To find the value of [tex]k[/tex], substitute the values [tex]x=3\text{ and } y=72[/tex] into the formula, and solve for [tex]k[/tex].

[tex]x=ky\\\implies 3=72k\\\implies k=\frac{1}{24}[/tex]

Thus the equation that relates [tex]x[/tex] and [tex]y[/tex] is

[tex]x=\frac{1}{24}y\text{ or } y=24x[/tex]

Learn more about direct proportion here: https://brainly.com/question/908424


Related Questions

Write 0.83838383 as a simplified fraction

Answers

answer:83838383/100000000

Bree takes 4.75 minutes to bike around the block how long does it take Bree to bike 11 times around the block?

Answers

Answer:

52.25 minutes

Step-by-step explanation:

4.75 * 11 is 52.25

Answer:

52.25

Step-by-step explanation:

Becasue 11 times 4.75 equals 52.25

Divide: 3/4 divided by 2/5

2 and 1/5

3 and 3/4

2 and 3/5

1 and 7/8

Answers

number 4. .75/.4=1.875

Answer:

1 and 7/8

Step-by-step explanation:

[tex]\frac{3}{4}[/tex] ÷ [tex]\frac{2}{5}[/tex]

When dividing you have to flip the second number. When the fraction/number flips the problem will turn into multiplication.

[tex]\frac{3}{4}[/tex] × [tex]\frac{5}{2}[/tex]

Now just multiply them. 3×5 and 4×2

[tex]\frac{15}{8}[/tex]

Simplify the fraction

[tex]1\frac{7}{8}[/tex]

I hope this helps!

Hi everyone this is the last question can you please help me for brainliest

Answers

I think that the answer is 8

which of the following is the ratio of boys to girls in tamir's math class?
12/27
12/15
15/12
27/12

Answers

The answer for your question is 12/15

Answer:

12/15

Step-by-step explanation:

you put the number of boys over the number of girls

sometimes you can simplfy but it looks like the answer choice doens't want you too

90 is what percent of 150

Answers

Answer:

60%

Step-by-step explanation:

Help Help Help Help Brainly please... If you were to plan a mission to Mars, what are the key phases that you need to include in your mission?

Answers

Answer:

1. Determine the Mission Objective. A mission objective has to be clear, measurable, and believable.

2. Identify the Threats. ...

3. Identify Your Available Resources. ...

4. Evaluate the Lessons Learned. ...

5. Determine Courses of Action/Tactics. ...

6. Plan for Contingencies.

What is the solution for -10 -19

A.)x > -19
B.)x -1

Answers

Answer:A

Step-by-step explanation:positive is bigger then negative.

A
HOPE THIS HELPS SORRY IF IM WRONG

Aubrey says that the product of 104 and 10–2 is 10–8. Is she correct? If not, explain why.
A. Yes, she is correct.
B. No, the exponent should be positive 8.
C. No, she multiplied the exponents instead of adding them.
D. No, she multiplied the exponents instead of subtracting them.

Answers

Answer:

C

Step-by-step explanation:

No, she multiplied the exponents instead of adding them.

I’m pretty sure the answer is c

Nicky and his parents recently Immigrated to the United States from Syria. Nicky attends school and is having a hard
time learning about his new country. His parents are interested in what happens in their community as well. Which
feature of national Identity is likely to make it hard for them to feel a part of the United States?
Language
innovation
competition
form of government

Answers

Answer:

Language

Step-by-step explanation:

Nicky is having a hard time with school - competition and form of government may be eliminated.

The only reason this is here so the other guy can get brainliest

On his way to the library , Jeff runs two blocks and then walks three more blocks.Sketch a graph to show the distance Jeff travels compared to time.

Answers

Answer:

Since I can't take a picture, I am going to explain how to draw it.

Step-by-step explanation:

When sketching the graph you must note if jeff is going up the y-axis and along the x-axis. In this case, run means he goes up every minute. So when jeff runs he is going up and 2 minutes have gone by. And when he walks he is going up 3 more but slower so it would double the time. Time would be on the x-axis and blocks would be labeled on the y-axis.

Hope this helps. : )

Please help ASAP with these problems!
Prove that: (12^13-12^12+12^11)(11^9-11^8+11^7) is divisible by 3, 7, 19, and 37. _ times 3 times 7 times 19 times 37
Factor completely: (4x^a+2)+20x^a
Factor completely: (15x^2c+3)-(25x^c+1)

Answers

Answer:

HUH

Step-by-step explanation:

you gotta write that out again because.

For 20 points, Round each mixed number to the nearest whole number. Then, estimate the quotient. 24 16/17 devided by 4 8/9

Answers

Answer:

you would round up because 24 16/17 is closer to 25 and 4 8/9 is closer to 5.

which would be 25/5 which estimates to 5.

Step-by-step explanation:

wich inequality is true?

Answers

Answer:

Step-by-step explanation:

just put them into percents lol

50% < 33.33% not true

75% > 66.66% true

-25% < -66.66% not true

-100% > 75% not true

so the second one is true

hope this helps <3

I believe it is the second one. It would be the only one that would make sense! Hope I helped!

plssssssssssssss help

Answers

What are the 7 & 9 for? Obviously, you had info from somewhere else for the 9 & 7 if they are THE ONLY NUMBERS here

Malik collects rare stamps and has a total of 96 stamps. He has 24 more domestic stamps than foreign stamps. Let d represent the number of domestic stamps and let f represent the number of foreign stamps.

This system of equations models the given information for both stamp types.

d – f = 24

d + f = 96

Solve the system of equations.

How many foreign stamps does Malik have?

number of foreign stamps
How many domestic stamps does Malik have?

number of domestic stamps

Answers

Answer:

Domestic Stamps: 60

Foreign Stamps: 36

Step-by-step explanation:

96 - 24 = 72

72 ÷ 2 = 36

36 + 24 = 60

d - f = 24

60 - 36 = 24

24 = 24

d + f = 96

60 + 36 = 96

96 = 96

Answer: d=60 and f=36
There are 60 domestic stamps and 36 foreign stamps.

Use the elimination method to solve


d-f=24
-d+f=96
_______

Line them up and them subtract


-2f=-72

The d cancel out

Isolate f by dividing both sides by -2

f=36


Replace f with 36 in either equation and then solves


d-(36)=24

Isolate d by adding both sides by 36

d=60


I really don't even remember learning this... PLEASE HELP. :) politely
I kind of already filled out some answer, please tell me if their wrong.

Answers

Answer:

Car C is going to have a constant of 55

Step-by-step explanation:

y=55x

y means that every hour you will have 55 miles

Car C haves 55 hope that helps!!

Jordan plotted the graph below to show the relationship between the temperature of his city and the number of cups of hot chocolate he sold daily (shown in the picture)

Describe how you can make the line of best fit. Write the approximate slope and y-intercept of the line of best fit. Show your work, including the points that you use to calculate the slope and y-intercept.

Answers

Answer:

I would draw a line from (40,20) to (80,8)

Step-by-step explanation:(40,2) is an outlier, so I wont use that.  I am roughly estimating that it I were to draw line from those points, It would have about the same number of dots above and below the line which tells me it is a line of best fit. Slope would be about -3 every 10 temperature climb.

put 2/3 5/7 16/21 in order from least to greatest

Answers

Answer:

5/7, 2/3, and 16/21

Step-by-step explanation:

If you put them all under the same denominator you will get 2/3=14/21, 5/7= 10/21, and 16/21. And if you put them in order it is 10/21, 14/21, and 16/21. Hope this helps, let me know if correct!!

2/3, 5/7, 16/21

Step-by-step explanation:

turn them into decimals

HELP ME! 1/2h=17+2 solve for h.

Answers

Answer:

H=38

Step-by-step explanation:

H=38

Explanation:

1/2h=17+2
*17+2*

1/2h=19
*multiply both sides*

2*1/2h=19*2
*simplify*

H=38

in mrs. smiths class every time you turn in assignments you earn 1 homework pass. write 3 equivalent ratios of turned in assignments to homework passes


help please I need it

Answers

Answer:

Assignment to Homework:   3:9    4:12     5:15

Answer:

3:9    4:12     5:15

i think

Step-by-step explanation:

A cardboard box has a volume that is 6,336 cubic inches. A company creates a new design with the same proportions, but instead the dimensions are One-fourth the dimensions. Explain how you can find the volume of the new design without knowing the dimensions.

Answers

Answer:

Cube the scale factor 0.25. Then multiply the volume of the box by 0.015625.

Answer:

Since the dimensions have a proportional relationship, the new volume can be calculated using the original volume and the scale factor. The new volume will be the cube of the change, which is 1

64

. The new volume is the product of 6,336 and 1

64

.

Step-by-step explanation:

that is the sample answer.

Rewrite the rational exponent as a radical expression (3 raised to 2/3) 1/6

Answers

11 over 18, i hope it’s right

PLEASE CAN SOMEONE ANSWER THIS

y=8.2x+459=

Answers

Both ways to write it our
(Slowly takes off crocks) hmmmmm

Fill in the blanks for each statement.


how much shaved ice was used to make the lemon ice cone, assuming the cone is completely full?





(A) The amount of shaved ice inside the cone is
______ π cubic inches.

(B) The amount of shaved ice on top of the cone is
______ π cubic inches.

(C) The total amount of shaved ice used to make the cone is
______ π cubic inches.

Answers

Answer:

(A) The amount of shaved ice inside the cone is 2.625π cubic inches.

(B) The amount of shaved ice on top of the cone is 2.25π cubic inches

(C) The total amount of shaved ice used to make the cone is 4.875π cubic inches.

Step-by-step explanation: I got the answers wrong on Time4Learning, Then it told me the correct answers. I hope this can help someone else get it correct!

The amount of shaved ice inside the cone and on top of the cone is 2.625 π and 2.25 π cubic inches. Then The total amount of shaved ice used to make the cone is 4.875 π cubic inches.

What is Geometry?

It deals with the size of geometry, region, and density of the different forms both 2D and 3D.

Ice cream is the combination of the cone and hemisphere.

Height of cone (h) = 3.5 in

Radius of come and hemisphere (r) = 1.5 in

(A) The amount of shaved ice inside the cone will be

[tex]\rm Volume\ of \ cone = \dfrac{1}{3} \pi r^2 h \\\\Volume\ of \ cone = \dfrac{1}{3} \pi 1.5^2 * 3.5\\\\Volume\ of \ cone = 2.625 \ \pi[/tex]

The amount of shaved ice inside the cone is 2.625 π cubic inches.

(B) The amount of shaved ice on top of the cone will be

[tex]\rm Volume\ of \ hemisphere= \dfrac{2}{3} \pi r^3 \\\\Volume\ of \ hemisphere= \dfrac{2}{3} \pi 1.5^3\\\\Volume\ of \ hemisphere= 2.25 \ \pi[/tex]

The amount of shaved ice on top of the cone is 2.25 π cubic inches.

(C) The total amount of shaved ice used to make the cone will be

[tex]\rm Total\ amount = Volume\ of \ hemisphere + Volume\ of \ cone\\\\Total\ amount = 2.625+ 2.25 \\\\Total\ amount = 4.875[/tex]

The total amount of shaved ice used to make the cone is 4.875 π cubic inches.

More about the geometry link is given below.

https://brainly.com/question/7558603

Consider the two functions below. Which one of these functions is linear? What is its equation? Enter any answers to two decimal places.

Answers

Answer:

Function A and the equation would be y = 1.6666666666~x + 0

Step-by-step explanation:

A linear function is a function that is a straight line with no change so function B does not fit that description. So than it has to be A

To find the equation you first what to find the slope of the line

ΔY/ΔX = 5/3 = 1.666666666666

Take the slope and multiply it by x to get y

Following are the solution to the given function:

Given:

Function A:

[tex]\bold{x} \ 3 \ 6 \ 9 \ 12 \ 15 \\\\\bold{y} \ 5 \ 10 \ 15 \ 20 \ 25[/tex]

To find:

Find the function=?

Solution:

Function A or equation would've been [tex]\bold{y = 1.6666666666 \sim x + 0}[/tex].The linear equation is a straight line with really no modification, hence function B doesn't suit its description. As a result, it has to be A.You must first calculate the slope of the line to solve this equation.[tex]\bold{\to \frac{\Delta Y}{ \Delta X} = 5/3 = 1.666666666666}[/tex]To get y, take the slope then multiply this by x.

Which number has only two factors?




A 21
B 27
C 25
D 23


please help-

Answers

Answer:

23

Step-by-step explanation:

Help Help Help Help...What does it take for an orbiting spacecraft to escape its orbit?

Answers

Answer:

Manual Override??

Step-by-step explanation: I'm prop wrong

Answer:

To leave its orbit, the spacecraft must go very fast to break free of gravity.

Step-by-step explanation:

PLS HELP DUE SOON!!!!!

Answers

Answer:

1) 2

2) y=2x+=-2

3) a=5

b=6

4) y=2x-2

y=(2*0)-2

y=0-2

y=-2

I'm not sure if they are all right

Sorry if they aren't

Hello! I’m answering because the person above me deserves a brainliest! To everyone reading this, have a Merry Christmas and a happy new year. I love you all❤️

Question below!!!!!!!!!!!!!

Answers

Answer:

A because they 35 needs to stay with 100 and x needs to stay with 275 and 100 and 275 have to be on the same part of the ratio

Step-by-step explanation:

The answer is A your welcome
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