document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1039414>Question 1039414</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the sum of the arithmetic sequence.\r<BR>\n" );
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document.write( "3/2 + 1/2+...+(-11/2) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #654146 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=654146\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Look at the sequence<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a ALIGN=MIDDLE  ALT=\"a\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a-2 ALIGN=MIDDLE  ALT=\"a-2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a-4%7D%7D%0D%0A%7B%7B%7Ba-6 ALIGN=MIDDLE  ALT=\"a-4%7D%7D%0D%0A%7B%7B%7Ba-6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a-8 ALIGN=MIDDLE  ALT=\"a-8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "5 terms starting with a, each successive term removes 2. <BR>\n" );
document.write( "The sum would be,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S=a%2Ba-2%2Ba-4%2Ba-6%2Ba-8 ALIGN=MIDDLE  ALT=\"S=a%2Ba-2%2Ba-4%2Ba-6%2Ba-8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S=5a-20 ALIGN=MIDDLE  ALT=\"S=5a-20\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S=5%28a-4%29 ALIGN=MIDDLE  ALT=\"S=5%28a-4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " or in terms of the number of values,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S=5%28a-4%29=n%28a-%28n-1%29%29=n%28a%2B1-n%29 ALIGN=MIDDLE  ALT=\"S=5%28a-4%29=n%28a-%28n-1%29%29=n%28a%2B1-n%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So in your sequence,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2F2%2B1%2F2-1%2F2-3%2F2-5%2F2-7%2F2-9%2F2-11%2F2=%281%2F2%29%283%2B1-1-3-5-7-9-11%29 ALIGN=MIDDLE  ALT=\"3%2F2%2B1%2F2-1%2F2-3%2F2-5%2F2-7%2F2-9%2F2-11%2F2=%281%2F2%29%283%2B1-1-3-5-7-9-11%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The starting term is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a=3 ALIGN=MIDDLE  ALT=\"a=3\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n=8 ALIGN=MIDDLE  ALT=\"n=8\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<BR>\n" );
document.write( "so then,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S=%281%2F2%298%283%2B1-8%29 ALIGN=MIDDLE  ALT=\"S=%281%2F2%298%283%2B1-8%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S=4%284-8%29 ALIGN=MIDDLE  ALT=\"S=4%284-8%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S=4%28-4%29 ALIGN=MIDDLE  ALT=\"S=4%28-4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S=-16 ALIGN=MIDDLE  ALT=\"S=-16\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );