document.write( "Question 915411: Hi. This is the problem I have:\r
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document.write( "The length of a rectangle is 3 times its width. If its perimeter is 32m, what is its area?\r
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document.write( "My friend has only written down on my book:
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document.write( "3x4=12
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document.write( "12+12+4+4=32 and
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document.write( "12x4=48\r
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document.write( "I don't understand how she got these numbers and would like you to explain this to me.
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document.write( "Thank you.
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Algebra.Com's Answer #555565 by josgarithmetic(39626) ![]() You can put this solution on YOUR website! w for width, L for length;\r \n" ); document.write( "\n" ); document.write( "L=3w; \n" ); document.write( "and \n" ); document.write( "2w+2L=32; \n" ); document.write( "and you want to know area, which is wL.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Substitute for L in 2w+2L=32. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Use the now found value for w to compute or evaluate L. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "- \n" ); document.write( "You now know both w=4 and L=12, and you can compute the area, w*L. \n" ); document.write( " |