document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1077369>Question 1077369</A>: <I><SPAN STYLE=\"word-break: break-all;\">  the perimeter of a rectangle is 40 inches and its area is 91 square inches find the length and width of the rectangle. solve step by step. There are 10 steps </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #691833 by </B><A HREF=/tutors/aboutme.mpl?userid=math_helper><B>math_helper(2461)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_helper><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=math_helper><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=691833\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2L + 2W = 40  (1)  —> L+W=20<BR>\n" );
document.write( "LW = 91   (2)\r<BR>\n" );
document.write( "\n" );
document.write( "L = 91/W  —> Substitute this into (1):<BR>\n" );
document.write( "(91/W) + W = 20<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=91%2BW%5E2+=+20W+ ALIGN=MIDDLE  ALT=\"91%2BW%5E2+=+20W+\"   DISABLED_style= \"max-width:90%; height:auto;\" >  <— multiplied both sides by W<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+W%5E2-20W%2B91+=+0+ ALIGN=MIDDLE  ALT=\"+W%5E2-20W%2B91+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28W-13%29%28W-7%29+=+0+ ALIGN=MIDDLE  ALT=\"+%28W-13%29%28W-7%29+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" >   <BR>\n" );
document.write( "W=7  or W=13<BR>\n" );
document.write( "W=7 —>  L=13<BR>\n" );
document.write( "W=13 —> L=7  (let's reject this as  L>W is the convention when describing rectangles)<BR>\n" );
document.write( "—<BR>\n" );
document.write( "Ans:  L=13in, W=7in<BR>\n" );
document.write( "—<BR>\n" );
document.write( "Check:  Area = LxW = 13in*7in = 91 sq in (ok)<BR>\n" );
document.write( "              Perimeter = 2L+2W=2(13in) + 2(7in) = 26in+14in = 40in  (ok)<BR>\n" );
document.write( "—<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );