document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=523402>Question 523402</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The base of a triangle is 5 centimeters longer than it's altitude. If the area of the triangle is 42 square centimeters, what is it's altitude?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #347389 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=347389\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use \"its\" instead of \"it's.\" \"It's\" stands for \"it is.\"\r<BR>\n" );
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document.write( "Let a be the altitude. Then the base is a+5. We can write an equation for the area of the triangle:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \frac{a(a+5)}{2} = 42\">\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE a(a+5) = 84\">\r<BR>\n" );
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document.write( "We can solve this using the quadratic equation or by factoring, but in this case, the easiest way is to note that 84 can be factored as 7*12, so a = 7 cm. </SPAN>\n" );
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