document.write( "Question 816341: A rectangle is drawn so the width is 71 inches longer than the height. If the rectangle's diagonal measurement is 85 inches, find the height.\r
\n" );
document.write( "\n" );
document.write( "Give your answer rounded to 1 decimal place.
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #491501 by TimothyLamb(4379)![]() ![]() You can put this solution on YOUR website! w = h + 71 \n" ); document.write( "d = 85 = sqrt( ww + hh ) \n" ); document.write( "--- \n" ); document.write( "85 = sqrt( ww + hh ) \n" ); document.write( "85^2 = ww + hh \n" ); document.write( "85^2 = (h + 71)(h + 71) + hh \n" ); document.write( "85^2 = hh + 142h + 71^2 + hh \n" ); document.write( "2h^2 + 142h + 71^2 - 85^2 = 0 \n" ); document.write( "2h^2 + 142h - 2184 = 0 \n" ); document.write( "--- \n" ); document.write( "the above quadratic equation is in standard form, with a=2, b=142, and c=-2184 \n" ); document.write( "--- \n" ); document.write( "to solve the quadratic equation, plug this: \n" ); document.write( "2 142 -2184 \n" ); document.write( "into this: https://sooeet.com/math/quadratic-equation-solver.php \n" ); document.write( "--- \n" ); document.write( "the roots of the quadratic are: \n" ); document.write( "h = 13 \n" ); document.write( "h = -84 \n" ); document.write( "--- \n" ); document.write( "the negative root doesn't make sense for a length, so use the positive root \n" ); document.write( "--- \n" ); document.write( "Answer: \n" ); document.write( "h = 13 in \n" ); document.write( "w = 84 in \n" ); document.write( "--- \n" ); document.write( "Solve and graph linear equations: \n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php \n" ); document.write( "--- \n" ); document.write( "Solve quadratic equations, quadratic formula: \n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php \n" ); document.write( "--- \n" ); document.write( "Convert fractions, decimals, and percents: \n" ); document.write( "https://sooeet.com/math/fraction-decimal-percent.php \n" ); document.write( "--- \n" ); document.write( "Calculate and graph the linear regression of any data set: \n" ); document.write( "https://sooeet.com/math/linear-regression.php \n" ); document.write( " |