document.write( "Question 338568: Two times the length plus two times the width equals the perimeter of a rectangle. The perimeter of the rectangle is 56 meters. Twice the length of the rectangle is one more than three times the width. What is the length of the rectangle? What is the width of the rectangle? \n" ); document.write( "
Algebra.Com's Answer #242735 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Write an equation for each statement: \n" ); document.write( ": \n" ); document.write( "Two times the length plus two times the width equals the perimeter of a rectangle. \n" ); document.write( "2L + 2W = P \n" ); document.write( ": \n" ); document.write( " The perimeter of the rectangle is 56 meters. \n" ); document.write( "2L + 2W = 56 \n" ); document.write( ": \n" ); document.write( "Twice the length of the rectangle is one more than three times the width. \n" ); document.write( "2L = 3W + 1 \n" ); document.write( ": \n" ); document.write( "Looking at this we can replace 2L in the 2nd equation with (3W+1), so we have: \n" ); document.write( "(3W+1) + 2W = 56 \n" ); document.write( "5W + 1 = 56 \n" ); document.write( "5W = 56 - 1 \n" ); document.write( "5W = 55 \n" ); document.write( "W = \n" ); document.write( "W = 11 m is the width \n" ); document.write( "then \n" ); document.write( "we know 2L = 3W + 1; replace W with 11 \n" ); document.write( "2L = 3(11) + 1 \n" ); document.write( "2L = 33 + 1 \n" ); document.write( "L = \n" ); document.write( "L = 17 m is the length \n" ); document.write( ": \n" ); document.write( "; \n" ); document.write( "Check this in the perimeter equation \n" ); document.write( "2(17) + 2(11) = 56 \n" ); document.write( "34 + 22 = 56 \n" ); document.write( "and \n" ); document.write( "2L = 3W + 1 \n" ); document.write( "34 = 3(11) + 1; confirms our solution: L = 17; W = 11\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |