document.write( "Question 945278: Hi, i need help on my homework. They are word problems.
\n" ); document.write( "1. the length of a rectangle is 3 times the width. The perimeter is 40. What is the length and the width of the rectangle?\r
\n" ); document.write( "\n" ); document.write( "2. the population of a gardens high school is 2500. If the number of males is 240 more than the number of females, how many males and females are there?
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Algebra.Com's Answer #576445 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "1. \r
\n" ); document.write( "\n" ); document.write( "if the length \"L\" of a rectangle is \"3+\"times the width \"W\", we have\r
\n" ); document.write( "\n" ); document.write( "\"L=3W\"\r
\n" ); document.write( "\n" ); document.write( " if the perimeter is \"40\"=> \"2%28L%2BW%29=40\" ...substitute \"L\" from above\r
\n" ); document.write( "\n" ); document.write( "\"2%283W%2BW%29=40\"\r
\n" ); document.write( "\n" ); document.write( "\"%284W%29=20\"\r
\n" ); document.write( "\n" ); document.write( "\"W=20%2F4\"\r
\n" ); document.write( "\n" ); document.write( "\"W=5\"\r
\n" ); document.write( "\n" ); document.write( "go to \"L=3W\", substitute \"5\" for \"W\"\r
\n" ); document.write( "\n" ); document.write( "\"L=3%2A5\"\r
\n" ); document.write( "\n" ); document.write( "\"L=15\"\r
\n" ); document.write( "\n" ); document.write( "so, the length is \"15\" and the width is \"5\"\r
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\n" ); document.write( "\n" ); document.write( "2.
\n" ); document.write( "the population of a gardens high school is \"2500\",
\n" ); document.write( " If the number of males is \"240\" more than the number of females, how many males and females are there?\r
\n" ); document.write( "\n" ); document.write( "let the number of males be \"m\" and the number of females \"f\"\r
\n" ); document.write( "\n" ); document.write( "we know that \"m%2Bf=2500\"...eq.1
\n" ); document.write( "we also know that \"m=f%2B240\"....eq.2 ...substitute it in eq.1\r
\n" ); document.write( "\n" ); document.write( "\"f%2B240%2Bf=2500\"...eq.1...solve for \"f\"\r
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\n" ); document.write( "\n" ); document.write( "\"2f=2500-240\"\r
\n" ); document.write( "\n" ); document.write( "\"2f=2260\"\r
\n" ); document.write( "\n" ); document.write( "\"f=2260%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28f=1130%29\"->the number of females\r
\n" ); document.write( "\n" ); document.write( "now find \"m=f%2B240\"
\n" ); document.write( "\"m=1130%2B240\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28m=1370%29\"->the number of males\r
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