document.write( "Question 57831: 14. The length of a rectangle is 9 in. more than twice its width. If the perimeter of the rectangle is 30 in., find the width of the rectangle.
\n" ); document.write( "A) 1 in.
\n" ); document.write( "B) 2 in.
\n" ); document.write( "C) 3 in.
\n" ); document.write( "D) 4 in.
\n" ); document.write( "Thankyou for your time!!!
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Algebra.Com's Answer #39511 by hayek(51)\"\" \"About 
You can put this solution on YOUR website!
If l=length and w=width, we have two unknowns. We need two equations to solve for two unknowns.\r
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\n" ); document.write( "\n" ); document.write( "The problem gives us both equations:
\n" ); document.write( "\"The length of a rectangle is 9 in. more than twice its width\" ==> \"l=2w%2B9\"
\n" ); document.write( "\"perimeter of the rectangle is 30 in\" ==> \"2w%2B2l=30\"\r
\n" ); document.write( "\n" ); document.write( "Plug the first equation into the second:
\n" ); document.write( "\"2w%2B2%282w%2B9%29=30\"
\n" ); document.write( "Distribute:
\n" ); document.write( "\"2w%2B4w%2B18=30\"
\n" ); document.write( "\"6w=12\"
\n" ); document.write( "\"highlight%28w=2%29\"inches\r
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