Question

Write a specific formula to describe the variation:x varies indirectly with the cube root of y;x=3when y= 125

Answer 1

x=15(1/3√y)

Explanation:

X varies indirectly with the cube root of y

x=k/3√y

x=3 when y=125

3=k/3√125

3=k/5

3=k(1/5)

k=3÷1/5

k=3×5/1

k=15

x=15(1/3√y)