document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=125858>Question 125858</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A rectangular garden is to be surrounded by a walkway of constant width.  The garden's dimensions are 30ft by 40ft. The total area, garden plus walkway, is to be 1800ft^2.  What must be the width of the walkway to the nearest thousandth? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #92241 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley71><B>checkley71(8403)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley71><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=92241\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (30+2x)(40+2x)=1,800<BR>\n" );
document.write( "1,200+80x+60x+4x^2=1,800<BR>\n" );
document.write( "4x^2+140x+1,200-1,800=0<BR>\n" );
document.write( "4x^2+120x-600=0<BR>\n" );
document.write( "4(x^2+30x-150)=0<BR>\n" );
document.write( "using the quadratic equation:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > we get:<BR>\n" );
document.write( "x=(-30+-sqrt[30^2-4*1*-150])/2*1<BR>\n" );
document.write( "x=(-30+-sqrt[900+600])/2<BR>\n" );
document.write( "x=(-30+-sqrt1500)/2<BR>\n" );
document.write( "x=(-30+-38.73)/2<BR>\n" );
document.write( "x=(-30+38.73)/2<BR>\n" );
document.write( "x=8.73/2<BR>\n" );
document.write( "x=4.365 ft is the width of the walkway.<BR>\n" );
document.write( " </SPAN>\n" );
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