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The values of x and y are always positive, and x^2 and y vary inversely. If y is 10 when x is 2, then find x when y is 4000.

 Sep 6, 2021
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y = k/x2

 

x2y= k    =  22 *10 = 40

 

x2 y = 40

x2 (4000) = 40

x2 = 1/100

x = 1/10

 Sep 6, 2021

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