document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1079225>Question 1079225</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If A is directly proportional to C and B is directly proportional to C, prove that each of the following is directly proportional to C.<BR>\n" );
document.write( "(a) A+B<BR>\n" );
document.write( "(b) A-B<BR>\n" );
document.write( "(c) &#8730;AB </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #693577 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=693577\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=u%2AC ALIGN=MIDDLE  ALT=\"A=u%2AC\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=B=v%2AC ALIGN=MIDDLE  ALT=\"B=v%2AC\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "where u and v are constants.<BR>\n" );
document.write( "So then,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%2BB=u%2AC%2Bv%2AC=C%28u%2Bv%29 ALIGN=MIDDLE  ALT=\"A%2BB=u%2AC%2Bv%2AC=C%28u%2Bv%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Directly proportional to C.\r<BR>\n" );
document.write( "\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%2BB=u%2AC-v%2AC=C%28u-v%29 ALIGN=MIDDLE  ALT=\"A%2BB=u%2AC-v%2AC=C%28u-v%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Directly proportional to C.\r<BR>\n" );
document.write( "\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28AB%29=sqrt%28u%2AC%2Av%2AC%29=sqrt%28uv%2AC%5E2%29=sqrt%28uv%29%2AC ALIGN=MIDDLE  ALT=\"sqrt%28AB%29=sqrt%28u%2AC%2Av%2AC%29=sqrt%28uv%2AC%5E2%29=sqrt%28uv%29%2AC\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Directly proportional to C.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );