document.write( "Question 1059522: z is jointly proportional to x^2 and y^2 . If z = 470 when x = 8 and y = 2 , find z when x = 7 and y = 3 . (Round off your answer to the nearest hundredth.) \n" ); document.write( "

Algebra.Com's Answer #674569 by solver91311(24713) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Using

, and

, solve for

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\n" ); document.write( "\n" ); document.write( "Then once you know

, that value works for any values of

and

. Just do the arithmetic.\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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