Mathematics
Abbajain
2016-04-12 01:37:36
z varies directly with x^2 and inversely with y. When x=2 and y=4, z=3. What is the value of z when x=4 and y=9
ANSWERS
paaresha
2016-04-12 07:39:39

z = (k * x^2)/y 3 = (k * 4)/4 3 = k z = (3x^2)/y z = (3 * 4^2)/9 z = 48/9 z= 16/3

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