document.write( "Question 863498: The perimeter of a rectangle is 54 cm. It's length is 6 cm. What is it's width. solve algebraically and arithmetically.
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document.write( " p = 2(l + w)
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document.write( "54 = 2(6 + w)
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document.write( "54 = 12 +2 w
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document.write( "-12 -12
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document.write( "42 = 2w
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document.write( "w = 21 \r
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document.write( "second problem Jerry is 50 inches tall and is growing at the rate of 1/24 inch per month. Adam is 47 inches tall and is growing at the rate of 1/8 inch per month. If they continue to grow at the same rates for the next 4 years, in how many months will they be the same height?
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document.write( "solve 2 different ways
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document.write( "specify what basic mathematics concept/relation is used to support your solution\r
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Algebra.Com's Answer #520448 by josgarithmetic(39621)![]() ![]() ![]() You can put this solution on YOUR website! Helping just with your second question.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x is for months, and y is for how tall. \n" ); document.write( "This is a simple two dimensional linear system problem. \n" ); document.write( "Jerry starts at 50 inches and Adam at 47 inches in tallness. \n" ); document.write( "Jerry's slope or growth rate is \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Their tallness equations are: \n" ); document.write( "Jerry: \n" ); document.write( "Adam: \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You want to know the point of intersection for these two equations. \n" ); document.write( "Find this intersection point, either algebraically or graphically. \n" ); document.write( " |