document.write( "Question 213480: Suppose that the length of a certain rectangle is 9 meters less than two times its width. The perimeter of the rectangle is 42 meters. Find the length and width of the rectangle. \n" ); document.write( "
Algebra.Com's Answer #161277 by drj(1380)\"\" \"About 
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Suppose that the length of a certain rectangle is 9 meters less than two times its width. The perimeter of the rectangle is 42 meters. Find the length and width of the rectangle.\r
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\n" ); document.write( "\n" ); document.write( "Step 1. Let l = 2w-9 be the length of rectangle and let w be the width\r
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\n" ); document.write( "\n" ); document.write( "Step 2. Let P = 42 meters be the perimeter. Perimeter means adding the 4 sides of a rectangle. So,\r
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\n" ); document.write( "\n" ); document.write( "\"P=2w-9%2B2w-9%2Bw%2Bw\"\r
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\n" ); document.write( "\n" ); document.write( "\"P=6w-18\"\r
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\n" ); document.write( "\n" ); document.write( "\"P=6w-18=42\"\r
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\n" ); document.write( "\n" ); document.write( "Step 3. Add 18 to both sides of equation to get 4w by itself\r
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\n" ); document.write( "\n" ); document.write( "\"P=6w%2B18-18=42%2B18\"\r
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\n" ); document.write( "\n" ); document.write( "\"6w=60\"\r
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\n" ); document.write( "\n" ); document.write( "Step 4. Divide 6 to both sides of equation\r
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\n" ); document.write( "\n" ); document.write( "\"6w%2F6=60%2F6\"\r
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\n" ); document.write( "\n" ); document.write( "\"w=+10+\"\r
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\n" ); document.write( "\n" ); document.write( "Step 5. w = 10 meters is the width of the rectangle and length is 11 m since\r
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\n" ); document.write( "\n" ); document.write( "l=2w-9=11\r
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\n" ); document.write( "\n" ); document.write( "Check P=2w+2l=2(10)+2(11)=20+22=42 So w = 10 meters and l = 11 meters is the solution.\r
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\n" ); document.write( "\n" ); document.write( "For free Step-By-Step Videos on Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trig Vids please visit http://www.FreedomUniversity.TV/courses/Trigonometry\r
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\n" ); document.write( "\n" ); document.write( "And GOOD LUCK in your studies!\r
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\n" ); document.write( "\n" ); document.write( "Respectfully
\n" ); document.write( "Dr J
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