SOLUTION: if y varies inversely as the cube of x, and y=64 when x=3,Find the value of x when y=216.

Question 414298: if y varies inversely as the cube of x, and y=64 when x=3,Find the value of x when y=216.
Found 2 solutions by josmiceli, ewatrrr:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Note: is called the constant of proportionality

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Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

Hi
y varies inversely as the cube of x OR y = k/x^3
y=64 when x=3 64 = k/27 k = 1728
Find the value of x when y = 216.
216 = 1728/x^3

x^3 = 8
x = 2
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