document.write( "Question 343278: For some reason, I keep coming up with 13 as the answer to this question
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document.write( "The length of the rectangle is 4 times its width, the perimeter is 90y, what is the area? \n" );
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Algebra.Com's Answer #245631 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! \"length of the rectangle is 4 times its width\" ___ L = 4W\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "\"the perimeter is 90y\" ___ 2L + 2W = 90y\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "substituting ___ 2(4W) + 2W = 90y ___ 10W = 90y ___ W = 9y\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "substituting ___ L = 4(9y) ___ L = 36y\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "A = L * W = 36y * 9y = 324y^2 \n" ); document.write( " |