document.write( "Question 305554: The perimeter of a rectangle is 42m.The length is 9m more than twice the width. Find the dimensions. \n" ); document.write( "

Algebra.Com's Answer #218789 by graphmatics(170) $\"\"$ $\"About$

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If w is the width of the rectangle and l is the length then:
\n" ); document.write( " $\"perimeter+=+2%2Aw%2B2%2Al+\"$ but
\n" ); document.write( " $\"l+=+2%2Aw%2B9+\"$ and
\n" ); document.write( " $\"perimeter+=+42+\"$ so:
\n" ); document.write( " $\"42+=+2%2Aw%2B2%2A%282%2Aw%2B9%29+\"$
\n" ); document.write( " $\"42+=+2%2Aw%2B4%2Aw%2B18+\"$
\n" ); document.write( " $\"42-18+=+6%2Aw+\"$
\n" ); document.write( " $\"24+=+6%2Aw+\"$
\n" ); document.write( " $\"24%2F6+=+w+\"$
\n" ); document.write( " $\"4+=+w+\"$
\n" ); document.write( "so:
\n" ); document.write( " $\"l+=+2%2A4%2B9+\"$
\n" ); document.write( " $\"l+=+17+\"$
\n" ); document.write( " \n" ); document.write( "

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