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25 February, 01:18

The quantity n varies jointly with the product of z and the square of the sum of x and y. When n is 18, x = 2, y = 1, and z = 3. What is the constant of variation?

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  1. 25 February, 01:38
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    Hello,

    n=k*z * (x+y) ²

    with n=18, x=2, y=1 and z=3

    ==>18=k*3 * (2+1) ²

    ==>k=18/27=2/3
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