document.write( "Question 18285: a rectangular yard has a total perimeter of 220 feet. the widths of the yard are each 30 feet shorter than the lengths of the yard. what are the dimensions of the yard? \n" ); document.write( "
Algebra.Com's Answer #8814 by mmm4444bot(95)\"\" \"About 
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Hello There:\r
\n" ); document.write( "\n" ); document.write( "We are told that the width of the rectangle is given in terms of the length. So, we start by assigning a variable name to represent the lenght of the rectangle. We then use this variable to write an expression for the width.\r
\n" ); document.write( "\n" ); document.write( "Let x = the length of the rectangle.\r
\n" ); document.write( "\n" ); document.write( "The width is 30 feet less.\r
\n" ); document.write( "\n" ); document.write( "x - 30 = the width of the rectangle.\r
\n" ); document.write( "\n" ); document.write( "Hopefully, you know that the perimeter is the sum of all four sides.\r
\n" ); document.write( "\n" ); document.write( "x + x + x - 30 + x - 30 = 220\r
\n" ); document.write( "\n" ); document.write( "Simplify the left side by combining like terms.\r
\n" ); document.write( "\n" ); document.write( "4x - 60 = 220\r
\n" ); document.write( "\n" ); document.write( "Solve for x.\r
\n" ); document.write( "\n" ); document.write( "4x = 280\r
\n" ); document.write( "\n" ); document.write( "x = 70\r
\n" ); document.write( "\n" ); document.write( "The length of the rectangle is 70; the width is 70 - 30 = 40.\r
\n" ); document.write( "\n" ); document.write( "Let's check our result.\r
\n" ); document.write( "\n" ); document.write( "Do the sides 70, 70, 40, and 40 add up to 220? (Yes, they do.)\r
\n" ); document.write( "\n" ); document.write( "Our answer is correct: The dimensions of the yard are 70 feet by 40 feet.\r
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