document.write( "Question 941012: Jim built a rectangular shed with a total floor-surface area of 126 sq.ft. If the length is 4 feet more than twice it's width, what is the length of the shed? I have no clue. \n" ); document.write( "

Algebra.Com's Answer #573567 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+A+=+L%2AW+\"$
\n" ); document.write( " $\"+126+=+L%2AW+\"$
\n" ); document.write( " $\"+L+=+2W+%2B+4+\"$
\n" ); document.write( "-----------------
\n" ); document.write( "By substitution:
\n" ); document.write( " $\"+A+=+%28+2W+%2B+4+%29%2AW+\"$
\n" ); document.write( " $\"+126+=+2W%5E2+%2B+4W+\"$
\n" ); document.write( " $\"+2W%5E2+%2B+4W++-+126+=+0+\"$
\n" ); document.write( "Divide through by $\"+2+\"$
\n" ); document.write( " $\"+W%5E2+%2B+2W+-+63+=+0+\"$
\n" ); document.write( " $\"+%28+W+%2B+9+%29%2A%28+W++-+7+%29+=+0+\"$ ( by looking at it )
\n" ); document.write( " $\"+W+=+7+\"$ ( can't use negative result )
\n" ); document.write( "-------------------
\n" ); document.write( "and, since:
\n" ); document.write( " $\"+L+=+2W+%2B+4+\"$
\n" ); document.write( " $\"+L+=+2%2A7+%2B+4+\"$
\n" ); document.write( " $\"+L+=+18+\"$
\n" ); document.write( "The length is 18 ft
\n" ); document.write( "-------------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+126+=+L%2AW+\"$
\n" ); document.write( " $\"+126+=+18%2A7+\"$
\n" ); document.write( " $\"+126+=+126+\"$
\n" ); document.write( "OK \n" ); document.write( "

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