document.write( "Question 956923: the length of a rectangle is three times the width, and the perimeter of the rectangle is 56 inches. what are the length and width of the rectangle? (note: P=2l+2w) \n" ); document.write( "
Algebra.Com's Answer #584659 by checkley77(12844) ![]() You can put this solution on YOUR website! L=3W \n" ); document.write( "56=2(3W)+2W \n" ); document.write( "56=6W+2W \n" ); document.write( "56=8W \n" ); document.write( "W=56/8 \n" ); document.write( "W=7 ANS. \n" ); document.write( "L=3*7=21 ANS. \n" ); document.write( "PROOF: \n" ); document.write( "56=2*21+2*7 \n" ); document.write( "56=42+14 \n" ); document.write( "56=56 \n" ); document.write( " |