document.write( "Question 943557: If the area of a rectangle is 20 cm. and its length is 19 less than 6 times its width, what are the length and width? Can you show me how you got the answer? \n" ); document.write( "
Algebra.Com's Answer #575373 by richard1234(7193)![]() ![]() You can put this solution on YOUR website! Length = 5 \n" ); document.write( "Width = 4 (to check, 5 = 6*4 - 19)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You can guess and check at the answer in some cases. A more algebraic solution is to let W be the width, then the length is 6W-19, and W(6W-19) = 20. This is equivalent to the quadratic 6W^2 - 19W - 20 = 0. Solve via factoring or quadratic formula. \n" ); document.write( " |