document.write( "Question 753920: I need to know if I did this correct?
\n" ); document.write( "Algebra (perimeter)\r
\n" ); document.write( "\n" ); document.write( "Dale Mayfield has decided to fence off a garden plot behind his house, using his house as the \"fence\" along one side of the garden. The length (Parallel to house) is 3 feet less than twice the width. Find the dimensions if 33 feet of fencing is used along the three sides requiring it. \r
\n" ); document.write( "\n" ); document.write( "I got width=39/6
\n" ); document.write( " length=10\r
\n" ); document.write( "\n" ); document.write( "I took 33=2(2w-3)+2w
\n" ); document.write( "Is this correct \n" ); document.write( "
Algebra.Com's Answer #458683 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Sorry, what you have is NOT correct. You tried to use the \r\n" );
document.write( "perimeter of a rectangle formula P = 2L + 2W.  But that \r\n" );
document.write( "particular perimeter formula is only good when there are \r\n" );
document.write( "FOUR sides of fencing, not when there are only THREE sides \r\n" );
document.write( "of fencing, as this problem states: \r\n" );
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document.write( "      ___HOUSE, NO FENCE__\r\n" );
document.write( "        |              | \r\n" );
document.write( "       W|              |W \r\n" );
document.write( "        |______________|\r\n" );
document.write( "             2W-3\r\n" );
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document.write( "So you must use this \r\n" );
document.write( "formula instead:\r\n" );
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document.write( "LEFT SIDE + FRONT SIDE + RIGHT SIDE = TOTAL LENGTH OF FENCE\r\n" );
document.write( "    ↓           ↓            ↓               ↓\r\n" );
document.write( "    W     +   2W-3     +     W      =       33 \r\n" );
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document.write( "Answer:  W = 9 feet,  Length = 2W+3 = 2(9)+3 = 18+3 = 21 feet        \r\n" );
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document.write( "Edwin
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