document.write( "Question 58172: The length of a rectangle is 2 centimeters less than three times its width.If the area is 40 square centimeters,find the length and width. \n" ); document.write( "
Algebra.Com's Answer #39826 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! L=3W-2 \n" ); document.write( "L*W=40 \n" ); document.write( "(3W-2)W=40 \n" ); document.write( "3W^2-2W-40=0 \n" ); document.write( "(3W+10)(W-4)=0 \n" ); document.write( "3W+10=0 \n" ); document.write( "3W=10 \n" ); document.write( "W=-10/3 NOT A SOLUTION \n" ); document.write( "W-4=0 \n" ); document.write( "W=4 \n" ); document.write( "L=3*4-2 \n" ); document.write( "L=12-2 \n" ); document.write( "L=10 \n" ); document.write( "PROOF \n" ); document.write( "10*4=40 \n" ); document.write( "40=40 \n" ); document.write( " |