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
Volgvan
3 years ago
9

If y varies directly as​ x, and y=8 when x=3​, find y when x=15.

Mathematics
1 answer:
Crank3 years ago
8 0

Answer:

y=40

Step-by-step explanation:

The formula for Direct Variation is y=kx or k=y/x. In this case I would use k=y/x. If you're y is 8 and x is 3, this means that K=8/3. Using this, we know that X=15. We have to find a Y value so that the fraction with an x of 15 simplified is 8/3. To do this you would write 8/3 and y/15. Now cross multiply to get 3y=120. Divide by 3 to get y=40. View my attachment for the work!

You might be interested in
You are mowing a lawn. After 12 minutes, 52% of the lawn still needs mowed. How long does it take to mow the entire lawn? Write
aleksley [76]
12/x = 52/48
12 * 48 = 52x
x = 11.07 This is one way to do it.

Let the time = x
Let the part of the lawn = y

The general equation
y = k*x
52/100 = k * 12
k = 0.043333 
y = 0.043333*x
y = 0.043333* 11.08
y = 0.48 which is what it should be.

Yet another way is to let y = kx
52 = k*12
k = 52/12
k = 4.33333333

y = 4.333333 * x
y = 4.333333 * 48
48  = 4.333333 * x
x = 11.07 which is just what you should expect.
7 0
3 years ago
PLEASE HELP WILL GIVE BRAINLIEST
Alexxandr [17]
N^2.....because this is the product of n and itself, not the sum
4 0
3 years ago
Read 2 more answers
Quadrilateral ABCD ​ is inscribed in a circle.
alexdok [17]
When a quadrilateral is inscribed in a circle, the opposite angles are supplementary.

x + 2 + 3x + 6 = 180
4x + 8 = 180
4x = 172
x = 43

Now solve for A
3(43) + 6 = A
129 + 6 = A
135 = A

The measure of angle A is 135 degrees.

Hope this helps =)
7 0
3 years ago
Find x and y? <br>i dont want to cheat but can anyone tell me how to do it or how to start out ​
mash [69]

Answer:

x is 13

y is 39

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Help meee hhbjjjjjhhh
velikii [3]
I hope this helps you. The answer is c
7 0
2 years ago
Other questions:
  • Randy filled out a deposit slip today. He deposited two checks for $123.17 and $34.68 and took out $50 in cash.
    7·2 answers
  • Simplify the expression shown below: (a^3b^12c^2)^2(a^5c^2)^3(b^5c^4)^0
    14·1 answer
  • Paramecia are unicellular protists that have contractile vacuoles to remove excess intracellular water. In an experimental inves
    12·1 answer
  • 5 times the sum of 7 and 23
    6·2 answers
  • Find x in the equation, 4(3x+1)=28
    9·1 answer
  • OMG PLEASE DO WHAT THE INSTRUCTIONS SAY I NEED THIS RN AND IF I DONT I’LL FAIL THE CLASS ILL GIVE BRAINLIEST PLEASE ANSWER CORRE
    5·1 answer
  • Whats is x − 2 /3 = 1 5 /6??
    9·1 answer
  • On see the inverse Nutrlicative meses have a product of 1. Find the multiplicative inverses of the terms in the first column Sho
    5·1 answer
  • The distance traveled by a toy car can be modeled by D(t) = t3 − 3t2 + t − 3, where t &gt; 3 represents time in seconds. If the
    15·1 answer
  • Order the side lengths HI, IK, HJ, IJ, and KJ from least to greatest.​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!