document.write( "Question 595625: The perimeter of a rectangle is 48 inches. Find its length if its width is 5 inches. \n" ); document.write( "
Algebra.Com's Answer #377242 by math-vortex(648)\"\" \"About 
You can put this solution on YOUR website!
The perimeter of a rectangle is 48 inches. Find its length if its width is 5 inches.
\n" ); document.write( "---------------------------------------------------------------
\n" ); document.write( "Hi, there--
\n" ); document.write( ".
\n" ); document.write( "Let's define some variables so we can write a formula for the perimeter.
\n" ); document.write( "Let's have L be the length and W be the width.
\n" ); document.write( ".
\n" ); document.write( "The perimeter is the distance around the rectangle, 48 inches. Remember that a rectangle has two equal lengths and two equal widths. We can call those 2L and 2W. Altogether, they add to 48 inches.
\n" ); document.write( ".
\n" ); document.write( "Then, the formula for the perimeter of your rectangle is
\n" ); document.write( "\"2L%2B2W=48\"
\n" ); document.write( ".
\n" ); document.write( "We know that the length of the rectangle is 5 inches. Substitute 5 for L in the formula.
\n" ); document.write( "\"2%285%29%2B2W=48\"
\n" ); document.write( ".
\n" ); document.write( "Now we simplify and solve for W.
\n" ); document.write( "\"10%2B2W=48\"
\n" ); document.write( ".
\n" ); document.write( "Subtract 10 from both sides.
\n" ); document.write( "\"2W=38\"
\n" ); document.write( ".
\n" ); document.write( "Divide both sides by 2.
\n" ); document.write( "\"W=19\"
\n" ); document.write( ".
\n" ); document.write( "According to our algebra, the width is 19 inches. We need to go back and check our work to make sure we did not make a mistake. Do our two widths and two lengths add up to 48 inches?
\n" ); document.write( "\"19%2B19%2B5%2B5=48\"
\n" ); document.write( "\"48=48\"
\n" ); document.write( "Bingo!!!
\n" ); document.write( ".
\n" ); document.write( "That's it. Feel free to email if any part of the explanation does not make sense.
\n" ); document.write( ".
\n" ); document.write( "Ms.Figgy
\n" ); document.write( "math.in.the.vortex@gmail.com
\n" ); document.write( "
\n" ); document.write( "
\n" );