document.write( "Question 53904: The length of a rectangle is 2 km less than 3 times the width. If the perimeter is 68 km, what is the lenght of the rectangle \n" ); document.write( "

Algebra.Com's Answer #36148 by funmath(2933) $\"\"$ $\"About$

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Rectangles are four sided figures with opposite sides that are equal. Perimeter is the sum of the sides (add all the sides). So the perimeter of a rectangle is:
\n" ); document.write( "Perimeter(P)=length(L)+lenght(L)+width(W)+width(W)
\n" ); document.write( "P=L+L+W+W
\n" ); document.write( "P=2L+2W
\n" ); document.write( "Let the width=x
\n" ); document.write( "Then length is 2 less than (-2) 3 times (3*)the width(x)=3x-2
\n" ); document.write( "P=68 km (This is a BIG rectangle.)
\n" ); document.write( "Plug them into your formula and solve for x:
\n" ); document.write( "68=2(3x-2)+2(x)
\n" ); document.write( "68=6x-4+2x
\n" ); document.write( "68=(6+2)x-4
\n" ); document.write( "68=8x-4
\n" ); document.write( "68+4=8x-4+4
\n" ); document.write( "72=8x
\n" ); document.write( " $\"72%2F8=8x%2F8\"$
\n" ); document.write( " $\"9=cross%288%29x%2Fcross%288%29\"$
\n" ); document.write( "9=x
\n" ); document.write( "The width:x=9km
\n" ); document.write( "The length:3x-2=3(9)-2=27-2=25km
\n" ); document.write( "Happy Calculating!!! \n" ); document.write( "

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