document.write( "Question 158976: The length of a rectangular playing field is 5 meters less than twice its width. if 230 meters of fencing goes around the field, find the dimensions of the field. \n" ); document.write( "
Algebra.Com's Answer #117089 by Electrified_Levi(103)\"\" \"About 
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Hi, Hope I can help
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\n" ); document.write( "The length of a rectangular playing field is 5 meters less than twice its width. if 230 meters of fencing goes around the field, find the dimensions of the field.
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\n" ); document.write( "First we have to find variables for length and width
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\n" ); document.write( "The length of a rectangular playing field is 5 meters less than twice its width.
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\n" ); document.write( "We can name the width \"x\"
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\n" ); document.write( "The length of a rectangular playing field is 5 meters less than twice its width, if the width is \"x\", and the length is 5 meters less than twice the width, this is how you right the length, \"+2%28width%29+-+5+\", width = \"x\" \"+2%28x%29+-+5+\" = \"+2x+-+5+\"
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\n" ); document.write( "The length = \"+2x+-+5+\"
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\n" ); document.write( "The width = \"+x+\"
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\n" ); document.write( "Since 230 meters of fencing goes around the field, we are trying to find the Perimeter of the field
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\n" ); document.write( "The length = \"+2x+-+5+\"
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\n" ); document.write( "The width = \"+x+\"
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\n" ); document.write( "The Perimeter of a Rectangle is = \"+2%28width%29+%2B+2%28length%29+=+Perimeter+\"
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\n" ); document.write( "They give us the Perimeter, 230 meters, so we can replace \"Perimeter\" with \"230\"
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\n" ); document.write( "\"+2%28width%29+%2B+2%28length%29+=+Perimeter+\" = \"+2%28width%29+%2B+2%28length%29+=+230+\"
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\n" ); document.write( "Since the width = \"+x+\", and the length = \"+2x+-+5+\", we can replace \"width\" and \"length\" with our variables
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\n" ); document.write( "\"+2%28width%29+%2B+2%28length%29+=+230+\" = \"+2%28x%29+%2B+2%282x+-+5%29+=+230+\", now just solve for \"x\"
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\n" ); document.write( "We will get rid of the parentheses, and use distribution
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\n" ); document.write( "\"+2%28x%29+%2B+2%282x+-+5%29+=+230+\" = \"+2x+%2B+highlight%282%29%28highlight%282x%29+-+5%29+=+230+\" = \"+2x+%2B+highlight%282%29%282x+-+highlight+%285%29%29+=+230+\" = \"+2x+%2B+4x+-+10+=+230+\" (Since the \"5\" is negative the number will be negative)
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\n" ); document.write( "Add like terms
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\n" ); document.write( "\"+2x+%2B+4x+-+10+=+230+\" = \"+highlight%282x%29+%2B+highlight%284x%29+-+10+=+230+\" = \"+6x+-+10+=+230+\"
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\n" ); document.write( "We will move (-10) to the right side
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\n" ); document.write( "\"+6x+-+10+=+230+\" = \"+6x+-+10%2B10+=+230%2B10+\" = \"+6x+=+240+\", To solve \"x\" we will divide each side by \"6\"
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\n" ); document.write( "\"+6x+=+240+\" = \"+6x%2F6+=+240%2F6+\" = \"+x+=+240+\" = \"+x+=+40+\"
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\n" ); document.write( "x = \"40\", we can check by replacing \"x\" with \"40\" in our equation
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\n" ); document.write( "\"+2%28x%29+%2B+2%282x+-+5%29+=+230+\" = \"+2%2840%29+%2B+2%282%2840%29+-+5%29+=+230+\" = \"+80+%2B+2%2880+-+5%29+=+230+\" = \"+80+%2B+2%2875%29+=+230+\" = \"+80+%2B+150+=+230+\" = \"+230+=+230+\" ( True )
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\n" ); document.write( "x = \"40\"
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\n" ); document.write( "Our width and length in variable form were:(Just replace \"x\" with \"40\" in our equations)
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\n" ); document.write( "The length = \"+2x+-+5+\" = \"+2%2840%29-5+\" = \"+80+-+5+\" = 75
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\n" ); document.write( "The width = \"+x+\" = 40
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\n" ); document.write( "Since the unit is the meter, our answers would be
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\n" ); document.write( "The Length = 75 meters
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\n" ); document.write( "The Width = 40 meters
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\n" ); document.write( "Hope I helped, Levi
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