document.write( "Question 830123: The width of a rectangle is 13 feet less than the length. If the area is 30 square feet, find the width.
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Algebra.Com's Answer #500360 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "y = x - 13
\n" ); document.write( "xy = 30
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\n" ); document.write( "xy = 30
\n" ); document.write( "x(x - 13) = 30
\n" ); document.write( "xx - 13x - 30 = 0
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\n" ); document.write( "the above quadratic equation is in standard form, with a=1, b=-13, and c=-30
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\n" ); document.write( "to solve the quadratic equation, by using the quadratic formula, copy and paste this:
\n" ); document.write( "1 -13 -30
\n" ); document.write( "into this solver: https://sooeet.com/math/quadratic-equation-solver.php
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\n" ); document.write( "the quadratic has two real roots at:
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\n" ); document.write( "x = 15
\n" ); document.write( "x = -2
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\n" ); document.write( "the negative root doesn't fit the problem statement, so use the positive root:
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\n" ); document.write( "x = length = 15 ft
\n" ); document.write( "y = width = 2 ft
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\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
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\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
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\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php \n" ); document.write( "
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