1.

X varies inversely with the square of y. when y is 2, x is 48. find x when y is 4.

Answer»

X is inversly PROPORTIONAL to y^2
X1=48 when Y1=2 and X2=? when Y2=4.
X1/X2=Y1^2/Y2^2.
48/x=4^2/2^2.
X=12.



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