1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
azamat
3 years ago
6

Item 16 The variables x and y vary directly. Use the values to find the constant of proportionality, k. Then write an equation t

hat relates x and y. Item 16 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.
Mathematics
1 answer:
masya89 [10]3 years ago
4 0

Answer:

k = 2

x = 2y

Step-by-step explanation:

If variables x and y vary directly, this is expressed as;

x ∝ y

x = ky

k is the proportionality constant

Let's assume the value of x and y since we are not given;

x = 20

y = 10

Substitute

20 = k(10)

10k = 20

k = 20/10

k = 2

Hence the constant of proportionality is 2

Substitute i=k = 2 into the equation x = ky

x = 2y

Hence an equation that relates x and y is x = 2y

<em>Note that the values here are assumed value, you can use the same method for any values of x and y</em>

You might be interested in
Use this tax table to find how much tax you need to pay on a taxable income of $25,000.
zheka24 [161]
<span>they would have to pay $899.88 on a taxable income of $25,000.</span>

4 0
2 years ago
Wrote and solve an equation to find the number.The difference of twice a number and 7 is 9​
andrew11 [14]

n - 7 = 9

Step-by-step explanation:

so basically just make up a random variable and place it for the "twice a number" then u sovle it as a 2 step equation

6 0
3 years ago
Find AB PLSSS HELP.<br> BRAINLIEST
vodka [1.7K]

Since C is 61 degrees, A is 90 degrees because of the right angle, and B would be 29 degrees because you add 61 and 90 together and subtract that amount from 180.

Wait I'm sorry if this is what you aren't looking for-

4 0
3 years ago
How do you find the legs of a right triangle when only given the hypotenuse?
tangare [24]

Answer:

We know that a^2+b^2=c^2. The 45° angle lets us know that y=x (45+45+90=180), so the problem is y^2+x^2=4sqrt of 2

4 \sqrt{2}  =  \sqrt{32 }  \\    \sqrt{32} ^{2}  = 32

So you get y^2+x^2=32, and from there, since we know x and y are equal, you can just divide 32 by 2 then take the square root of that, so the answer should be <em><u>4</u></em><em><u> </u></em><em><u>for</u></em><em><u> </u></em><em><u>both</u></em><em><u> </u></em><em><u>x</u></em><em><u> </u></em><em><u>and</u></em><em><u> </u></em><em><u>y</u></em>

Step-by-step explanation:

let me know if I'm wrong lol

6 0
2 years ago
Joe is 1.6m tall. His shadow is 2m long when he stands 3m from the base of a floodlight.height1.6 m2m3mWhat is the height of the
alexdok [17]
We are given the height of Joe which is 1.6 meters, the length of his shadow is 2 meters when he stands 3 meters from the base of the floodlight. 

First, we have to illustrate the problem. Then we can observe two right triangles formed, one is using Joe and the length of the shadow, the other is the floodlight and the sum of the distance from the base plus the length of the shadow. To determine the height of the floodlight, use ratio and proportion:

1.6 / 2 = x / (2 +3)

where x is the height of the flood light

solve for x, x = 4. Therefore, the height of the floodlight is 4 meters.
6 0
3 years ago
Other questions:
  • Will give brainliest!
    7·2 answers
  • What are the intercepts of this function?<br><br> f(x) = -8x + 4
    11·1 answer
  • In a class of 777, there are 333 students who have done their homework.
    12·1 answer
  • If I get 9 sticks, how do I creat 10 with out breaking the sticks
    9·1 answer
  • Is 2 the solution of 4x+2=x+8
    15·1 answer
  • Given the parent function f(x)=x^2 give the best description of the graph of y=x^3+3. a. expanded vertically by a factor of 5 c.
    15·2 answers
  • PLEASE HELP QUICKLY!!!
    10·2 answers
  • What is the NOT A RESTRICTION on the quotient of quantity 5 x squared minus 10 x minus 15 divided by quantity x squared minus 9
    9·1 answer
  • Question Five
    15·1 answer
  • the space station has an average orbit of 250 miles above the earth. how many pennies would it take to make a stack that high? p
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!