document.write( "Question 385908: The area of a rectangle is 50 and the perimeter is 32 Calculate the dimensions of the rectangle to 2 decimal places. I think a quadratic equation is needed.\r
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document.write( "Thank you \n" );
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Algebra.Com's Answer #272906 by mananth(16946)![]() ![]() You can put this solution on YOUR website! l*w=50 \n" ); document.write( "l+w=32 \n" ); document.write( "... \n" ); document.write( "l=50/w \n" ); document.write( ".. \n" ); document.write( "substitute the value of l \n" ); document.write( "50/w +w=32 \n" ); document.write( "(50+w^2)/w=32 \n" ); document.write( ".. \n" ); document.write( "multipy by w \n" ); document.write( "50+w^2=32w \n" ); document.write( "w^2-32w+50=0 \n" ); document.write( "use quadratic equation \n" ); document.write( "a=1,b=-32,c=50 \n" ); document.write( "b^2-4ac= 824 \n" ); document.write( "... \n" ); document.write( " \n" ); document.write( "x1=30.35 \n" ); document.write( " \n" ); document.write( ".. \n" ); document.write( "x2=1.65 \n" ); document.write( "The dimensions are 30.35 by 1.65 \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |