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Asked by Butterfly girl

Suppose T varies jointly with r and the square of n. When r=5 and n=3, then T=180. Find T if r=9 and n=4.
4 years ago

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Answered by Butterfly girl
Please explain the answer
4 years ago
Answered by oobleck
T = krn^2
so, T/(rn^2) is constant. You want T such that
T/(9*16) = 180/(5*9)
4 years ago

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