document.write( "Question 232882: the perimeter of a rectangular pool is 140 yd. if the length is 20 yd less than twice the width, find the length and the width \n" ); document.write( "
Algebra.Com's Answer #171979 by mando271(42)![]() ![]() ![]() You can put this solution on YOUR website! i'll use L for length and W for width.\r \n" ); document.write( "\n" ); document.write( "you are given that L=2W-20.\r \n" ); document.write( "\n" ); document.write( "and you need 2 lengths and 2 width to form a rectangle, so.\r \n" ); document.write( "\n" ); document.write( "2W+2(2W-20)=140\r \n" ); document.write( "\n" ); document.write( "2W+4W-40=140\r \n" ); document.write( "\n" ); document.write( "6W=180\r \n" ); document.write( "\n" ); document.write( "W=30\r \n" ); document.write( "\n" ); document.write( "so width equals 30, now plug this in to the 1st equation to solve for L\r \n" ); document.write( "\n" ); document.write( "L=2(30)-20\r \n" ); document.write( "\n" ); document.write( "L=60-20\r \n" ); document.write( "\n" ); document.write( "L=40 \n" ); document.write( " |