document.write( "Question 548294: a landscaper who just completed a rectangular flower garden measuring 11 ft. in length and 8 ft in width orders one cubic yd of premixed cement all of which is used to create a border of uniform width around the garden if the border is to have a depth of 3 inches, how wide will the border be? (1 cubic yd=27 cubic ft) \n" ); document.write( "
Algebra.Com's Answer #356965 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
let x be the width of the sidewalk\r
\n" ); document.write( "\n" ); document.write( "length including sidewalk = 11+2x
\n" ); document.write( "width+sidewalk=8+2x\r
\n" ); document.write( "\n" ); document.write( "Area with sidewalk - area of garden = srea of sidewalk\r
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\n" ); document.write( "\n" ); document.write( "Area of sidewalk = (11+2x)(8+2x)-88\r
\n" ); document.write( "\n" ); document.write( "Volume of sidewalk =((11+2x)(8+2x)-88)*1/4 = 27\r
\n" ); document.write( "\n" ); document.write( "(11+2x)(8+2x)-88= 108\r
\n" ); document.write( "\n" ); document.write( "88+22x+16x+4x^2-88=108
\n" ); document.write( "4x^2+38x-108=0
\n" ); document.write( "/2
\n" ); document.write( "2x^2+19x-54=0
\n" ); document.write( "Find the roots of the equation by quadratic formula
\n" ); document.write( "
\n" ); document.write( "a= 2 ,b= 19 ,c= -54
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\n" ); document.write( "b^2-4ac= 361 + 432
\n" ); document.write( "b^2-4ac= 793
\n" ); document.write( "\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\" 28.16
\n" ); document.write( "\"x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29\"
\n" ); document.write( "\"x1=%28-12%2B21%29%2F%2812%29\"
\n" ); document.write( "x1=( -19 + 28.16 )/ 4
\n" ); document.write( "x1= 2.29
\n" ); document.write( "x2=( -19 -28.16 ) / 4
\n" ); document.write( "x2= -11.79
\n" ); document.write( "Ignore negative value
\n" ); document.write( "width = 2.29 feet
\n" ); document.write( "m.ananth@hotmail.ca
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