Math

If the quantity P varies as the square of Q and inversely as the square root R. If P=12,Q=3 and R=81,find P if Q=1 and R°25

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  1. P = kQ^2/√R
    so, P√R/Q^2 = k, which is constant.
    So, you want to find P such that
    P√25/1^2 = 12√81/3^2
    now just simplify and solve for P

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