SOLUTION: y varies directly as the square of x. When x = 2, y = 40. Find x when y = 640
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Question 711831: y varies directly as the square of x. When x = 2, y = 40. Find x when y = 640
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
varies directly as the square of 
so: 
Substitute 2 for and 40 for . Then solve for 
Once you have determined a value for , substitute that value for and 640 for , then solve for
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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