document.write( "Question 989658: a rectangle's length is 8 cm more than three times its width. If the perimeter is 128 cm, find the length and the width \n" ); document.write( "
Algebra.Com's Answer #610017 by macston(5194)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "W=width; L=length=3W+8cm \n" ); document.write( ". \n" ); document.write( "P=2(L+W) \n" ); document.write( "128cm=2((3W+8cm)+W) \n" ); document.write( "64cm=4W+8cm \n" ); document.write( "56cm=4W \n" ); document.write( "14cm=W ANSWER 1: The width is 14cm. \n" ); document.write( "L=3W+8cm=3(14cm)+8cm=50cm ANSWER 2: The length is 50 cm. \n" ); document.write( ". \n" ); document.write( "CHECK: \n" ); document.write( ". \n" ); document.write( "P=2(L+W) \n" ); document.write( "128cm=2(50cm+14cm) \n" ); document.write( "128cm=2(64cm) \n" ); document.write( "128cm=128cm\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |