document.write( "Question 189025: Find and equation of varitation for the given situation.\r
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document.write( "1) y varies inversely as the square of x, and y=6 when x=3\r
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document.write( "2) y varies directly as x and inversely as z, and y=4 when x=14 and z=15\r
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document.write( "3) y varies jointly as x and z inversely as the square of w , and y=12/5 when x=16, z=3, w=5\r
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document.write( "I really need help how to solve this. Im lost and need help. Thanks \n" );
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Algebra.Com's Answer #141781 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Find and equation of varitation for the given situation. \n" ); document.write( "1) y varies inversely as the square of x: \n" ); document.write( "y = k/x \n" ); document.write( "and y=6 when x=3 \n" ); document.write( "6 = k/3 \n" ); document.write( "k = 18 \n" ); document.write( "Equation: y = 18/x \n" ); document.write( "===========================\r \n" ); document.write( "\n" ); document.write( "2) y varies directly as x and inversely as z: \n" ); document.write( "y = kx/z \n" ); document.write( "y=4 when x=14 and z=15 \n" ); document.write( "4 = k*14/15 \n" ); document.write( "k = 60/14 \n" ); document.write( "k = 30/7 \n" ); document.write( "-- \n" ); document.write( "Equation: y = (30/7)(x/z) \n" ); document.write( "==================================== \n" ); document.write( " \n" ); document.write( "3) y varies jointly as x and z inversely as the square of w: \n" ); document.write( "y = k[xz/w^2] \n" ); document.write( "y=12/5 when x=16, z=3, w=5 \n" ); document.write( "(12/5) = k[16*3/25] \n" ); document.write( "k = (25*12/5*3)=20 \n" ); document.write( "--- \n" ); document.write( "Equation: y = 20[xz/w^2] \n" ); document.write( "==================================== \n" ); document.write( "Cheers. \n" ); document.write( "Stan H.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |