document.write( "Question 1018971: The perimeter of a rectangle is 210 feet. Describe the possible lengths of a side if the area of the rectangle is not to exceed 2250 square feet.\r
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\n" ); document.write( "\n" ); document.write( "ANSWER: The length (in feet) of a side is in the interval....
\n" ); document.write( " or in the interval....
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Algebra.Com's Answer #634958 by josgarithmetic(39623)\"\" \"About 
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w and L, dimensions;
\n" ); document.write( "\"system%28wL%3C=2250%2C2w%2B2L=210%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"system%28wL%3C=2250%2Cw%2BL=105%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"w=105-L\"
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\n" ); document.write( "\"%28105-L%29L%3C=2250\"
\n" ); document.write( "\"105L-L%5E2%3C=2250\"
\n" ); document.write( "\"-L%5E2%2B105L-2250%3C=0\"
\n" ); document.write( "\"L%5E2-105L%2B2250%3E=0\"\r
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\n" ); document.write( "\n" ); document.write( "Check around the critical values L as \"%28105%2B-+45%29%2F2\", or 30 and 75.
\n" ); document.write( "\"highlight_green%28%28L-30%29%28L-75%29%3E=0%29\";
\n" ); document.write( "You cannot use L=0.
\n" ); document.write( "(0,30] ?
\n" ); document.write( "[30,75]?
\n" ); document.write( "[75,infinity) ?
\n" ); document.write( "Which interval will work?\r
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\n" ); document.write( "\n" ); document.write( "RESULT: Only the first listed interval will work.
\n" ); document.write( "\"highlight%280%3CL%3C=30%29\"
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