document.write( "Question 900321: The length of a rectangle is 11 centimeters less than three times its width. Its area is 42 square centimeters. Find the dimensions of the rectangle. \n" ); document.write( "
Algebra.Com's Answer #545964 by JulietG(1812)![]() ![]() You can put this solution on YOUR website! L = 3W-11 \n" ); document.write( "L * W = A \n" ); document.write( "You can do this algebraically by substituting the value of L from the top equation into the bottom, but there's an easier way. \n" ); document.write( "One of the factor sets of 42 is 7/6. You can tell right away that those are the correct numbers just by looking at the problem. \n" ); document.write( "Prove it: \n" ); document.write( "7 = 3(6) - 11 \n" ); document.write( "7 = 18-11 \n" ); document.write( "7 = 7 \n" ); document.write( " |