document.write( "Question 1190435: The width of a rectangle is 25.7 feet less than four times its length, and the perimeter is 29.6 feet. Find the length and the width of the rectangle \n" ); document.write( "
Algebra.Com's Answer #822251 by ikleyn(52908) You can put this solution on YOUR website! . \n" ); document.write( "The width of a rectangle is 25.7 feet less than four times its length, \n" ); document.write( "and the perimeter is 29.6 feet. Find the length and the width of the rectangle \n" ); document.write( "~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " It is to replace wrong solution from @josgarithmetic . . . \r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "Let L be the length, in feet; then the width is 4L-25.7 feet.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Write equation for the half of the perimeter as you read the problem\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " L + (4L - 25.7) = 14.8 feet ( where 14.8 = 29.6/2 )\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Simplify and find L\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " 5L = 14.8 + 25.7\r\n" ); document.write( "\r\n" ); document.write( " 5L = 40.5\r\n" ); document.write( "\r\n" ); document.write( " L = 40.5 / 5 = 8.1.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Thus the length is 8.1 feet; the width is 4*8.1-25.7 = 6.7 feet. ANSWER\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "CHECK. The perimeter is 2*(8.1+6.7) = 2*14.8 = 29.6 ft. ! Precisely Correct !\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |