document.write( "Question 55585: I know the answer to this problem is 28 however I am having trouble writing an equation for
\n" ); document.write( "a day care received a new sandbox.the perimeter is 84 ft and the lenght is twice as long as the width.what is the lenght of the sandbox?
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Algebra.Com's Answer #37732 by Earlsdon(6294)\"\" \"About 
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For a rectangle, the perimeter, P = 2L+2W = 84 ft.
\n" ); document.write( "But, L = 2W Substitute this for L in the above equation.
\n" ); document.write( "84 = 2(2W) + 2W Simplify and solve for W.
\n" ); document.write( "84 = 6W Divide both sides by 6.
\n" ); document.write( "14 = W
\n" ); document.write( "L = 2W
\n" ); document.write( "L = 2(14)
\n" ); document.write( "L = 28\r
\n" ); document.write( "\n" ); document.write( "The length is 28 ft.
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