document.write( "Question 325284: Suppose z varies directly with x and inversely with the square of y. When x= 5 and y= 9, and z= 900. Find the equation of variation. \n" ); document.write( "
Algebra.Com's Answer #232956 by Alan3354(69443)\"\" \"About 
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Suppose z varies directly with x and inversely with the square of y. When x= 5 and y= 9, and z= 900. Find the equation of variation.
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\n" ); document.write( "z = kx/y
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\n" ); document.write( "900 = k*5/9
\n" ); document.write( "k = 1620
\n" ); document.write( "z = 1620x/y is the equation
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