document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1066940>Question 1066940</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A rectangular field is 150 feet by 250 feet. You begin clearing the outside of the field, how wide of a border around the field must you mow to complete 1/2 the job?\r<BR>\n" );
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document.write( "Teacher says we can you use calculator to check answer for this can you please explain how and how to solve problem. Thanks. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #682165 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=682165\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A rectangular field is 150 feet by 250 feet.<BR>\n" );
document.write( " You begin clearing the outside of the field,<BR>\n" );
document.write( " how wide of a border around the field must you mow to complete 1/2 the job?<BR>\n" );
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document.write( "Find the total area of the field:<BR>\n" );
document.write( "150 * 250 = 37,500 sq/ft<BR>\n" );
document.write( "then the mowed area and the remaining area are:<BR>\n" );
document.write( "37500/2 = 18,750 sq/ft<BR>\n" );
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document.write( "Let x = the width of the border clears around the field<BR>\n" );
document.write( "(150-2x)*(250-2x) = 18750<BR>\n" );
document.write( "FOIL<BR>\n" );
document.write( "37500 - 300x - 500x + 4x^2 = 18750<BR>\n" );
document.write( "Arrange as a quadratic equation<BR>\n" );
document.write( "4x^2 - 800x + 37500 - 18750 = 0<BR>\n" );
document.write( "4x^2 - 800x + 18750 = 0<BR>\n" );
document.write( "Use the quadratic equation to find x. a=4; b=-800; c=18750<BR>\n" );
document.write( "My two solutions<BR>\n" );
document.write( "x = 27.113<BR>\n" );
document.write( "x = 172.887<BR>\n" );
document.write( "Only reasonable solution is x = 27.113 ft is the width of border<BR>\n" );
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document.write( "Check this on your calc, find the area of the remaining field which is half so equal to area of the mowed part:<BR>\n" );
document.write( " (150-2(27.113))*(250-2(27.113)) =    </SPAN>\n" );
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