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Mathematics 7 Online
OpenStudy (anonymous):

y varies directly as the square of x. When x = 4, y = 48. What is the value of y when x = 5?

OpenStudy (anonymous):

75

OpenStudy (anonymous):

y varies directly as the square of x, so y=Kx^2. Substitute the given values to get K, then find the value of y at x=5. I think it's probably close to seventy-five.

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