document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=887327>Question 887327</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given isosceles trapezoid TRHY, in units what is the length of b2 if the height is 13 units, b1 is 21 units, and the area is 215 units squared? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #536541 by </B><A HREF=/tutors/aboutme.mpl?userid=algebrapro18><B>algebrapro18(249)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=algebrapro18><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=536541\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We will use the following formula to solve this problem:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+%28%28b1%2Bb2%29%2F2%29h ALIGN=MIDDLE  ALT=\"A+=+%28%28b1%2Bb2%29%2F2%29h\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br>\r<BR>\n" );
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document.write( "We know the area is 215 units squared, base 1 is 21 units, and the height is 13 units so we can plug those into the formula and solve for b2. <br>\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+%28%28b1%2Bb2%29%2F2%29h ALIGN=MIDDLE  ALT=\"A+=+%28%28b1%2Bb2%29%2F2%29h\"   DISABLED_style= \"max-width:90%; height:auto;\" > plug in what we know<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=215+=+%28%2821%2Bb2%29%2F2%2913 ALIGN=MIDDLE  ALT=\"215+=+%28%2821%2Bb2%29%2F2%2913\"   DISABLED_style= \"max-width:90%; height:auto;\" > distribute the 13<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=215+=+%28273%2B13b2%29%2F2%29 ALIGN=MIDDLE  ALT=\"215+=+%28273%2B13b2%29%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > multiply both sides by 2<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=430+=+273%2B13b2 ALIGN=MIDDLE  ALT=\"430+=+273%2B13b2\"   DISABLED_style= \"max-width:90%; height:auto;\" > subtract 273 from both sides<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=157+=+13b2 ALIGN=MIDDLE  ALT=\"157+=+13b2\"   DISABLED_style= \"max-width:90%; height:auto;\" > divide both sides by 13<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=157%2F13+=+b2 ALIGN=MIDDLE  ALT=\"157%2F13+=+b2\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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