document.write( "Question 268934: the width of a rectangle is 11 inches less than its length. find the dimensions of the rectangle if the area is 80 square inches. \n" ); document.write( "

Algebra.Com's Answer #197031 by unlockmath(1688) $\"\"$ $\"About$

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Hello,
\n" ); document.write( "Let's set up x as the length and x-11 as the width. Now we can set up an equation like:
\n" ); document.write( "x(x-11)=80 Rewritten as:
\n" ); document.write( "x^2-11x=80 Subtract 80 from both sides to get:
\n" ); document.write( "x^2-11x-80=0 Factor this to get:
\n" ); document.write( "(x-16)(x+5)=0 Solve for x
\n" ); document.write( "x=16
\n" ); document.write( "x=-5 OK, we know this doesn't work,
\n" ); document.write( "so the length is:
\n" ); document.write( "16 inches and the width is 5 inches. Check it out to see if it works.
\n" ); document.write( "There's a book I wrote that might help:
\n" ); document.write( "www.math-unlock.com \n" ); document.write( "

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