Question

Y varies directly with the square of x.
If x= 1/2 and y = 12, find x when y = 432.

Answer 1

20.8

Explanation:

y = x^2

Given the value of y = 432, the equation would be:

432 = x^2

x is found by finding the square root of 432

sqrt 432 = sqrt (x^2)

x = 20.8

Check:

20.8^2 = 432.64

Your final answer would be 20.8.