document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1155872>Question 1155872</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A gardener has a 40 foot by 35 foot rectangular plot of ground. She wants to build a brick walkway of uniform width on the border of the plot. If the gardener wants to have 1,000 square feet of ground left for planting, how wide (to two decimal places) should she build the walkway? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #778568 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=778568\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+w+ ALIGN=MIDDLE  ALT=\"+w+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the width of the walkway<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+40+-+2w+%29%2A%28+35+-+2w+%29+=+1000+ ALIGN=MIDDLE  ALT=\"+%28+40+-+2w+%29%2A%28+35+-+2w+%29+=+1000+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1400+-+70w+-+80w+%2B+4w%5E2+=+1000+ ALIGN=MIDDLE  ALT=\"+1400+-+70w+-+80w+%2B+4w%5E2+=+1000+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4w%5E2+-+150w+%2B+400+=+0+ ALIGN=MIDDLE  ALT=\"+4w%5E2+-+150w+%2B+400+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2w%5E2+-+75w+%2B+200+=+0+ ALIGN=MIDDLE  ALT=\"+2w%5E2+-+75w+%2B+200+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+w+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"+w+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+=+2+ ALIGN=MIDDLE  ALT=\"+a+=+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+-75+ ALIGN=MIDDLE  ALT=\"+b+=+-75+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+=+200+ ALIGN=MIDDLE  ALT=\"+c+=+200+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+w+=+%28-%28-75%29+%2B-+sqrt%28+%28-75%29%5E2-4%2A2%2A200+%29%29%2F%282%2A2%29+ ALIGN=MIDDLE  ALT=\"+w+=+%28-%28-75%29+%2B-+sqrt%28+%28-75%29%5E2-4%2A2%2A200+%29%29%2F%282%2A2%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+w+=+%28+75+%2B-+sqrt%28+5625+-+1600+%29%29+%2F+4+ ALIGN=MIDDLE  ALT=\"+w+=+%28+75+%2B-+sqrt%28+5625+-+1600+%29%29+%2F+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+w+=+%28+75+%2B-+sqrt%28+4025+%29%29+%2F+4+ ALIGN=MIDDLE  ALT=\"+w+=+%28+75+%2B-+sqrt%28+4025+%29%29+%2F+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+w+=+%28+75+-+63.4429%29+%2F+4+ ALIGN=MIDDLE  ALT=\"+w+=+%28+75+-+63.4429%29+%2F+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+w+=+11.5571+%2F+4+ ALIGN=MIDDLE  ALT=\"+w+=+11.5571+%2F+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+w+=+2.889+ ALIGN=MIDDLE  ALT=\"+w+=+2.889+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "the width is 2.89 ft, rounded off.<BR>\n" );
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document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2w%5E2+-+75w+%2B+200+=+0+ ALIGN=MIDDLE  ALT=\"+2w%5E2+-+75w+%2B+200+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2%2A2.889%5E2+-+75%2A2.889+%2B+200+=+0+ ALIGN=MIDDLE  ALT=\"+2%2A2.889%5E2+-+75%2A2.889+%2B+200+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2%2A8.346321+-+216.675+%2B+200+=+0+ ALIGN=MIDDLE  ALT=\"+2%2A8.346321+-+216.675+%2B+200+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+16.692642+-+216.675+%2B+200+=+0+ ALIGN=MIDDLE  ALT=\"+16.692642+-+216.675+%2B+200+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+692642+-+.675+=+-.0176+ ALIGN=MIDDLE  ALT=\"+692642+-+.675+=+-.0176+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "I think the error is due to rounding off<BR>\n" );
document.write( "You can verify this.<BR>\n" );
document.write( "Get a 2nd opinion, too, if needed\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );