document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=976296>Question 976296</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the sum of the first 12 terms of the arithmetic sequence whos general term is an=3n+ 5<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #597894 by </B><A HREF=/tutors/aboutme.mpl?userid=dkppathak><B>dkppathak(439)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dkppathak><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=dkppathak><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=597894\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the sum of the first 12 terms of the arithmetic sequence whose general term is an=3n+ 5<BR>\n" );
document.write( "a1=3x1+5=8<BR>\n" );
document.write( "a2=3x2+5=11<BR>\n" );
document.write( "a3=3x3+5=14<BR>\n" );
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document.write( "a12=3x12+5=41<BR>\n" );
document.write( "therefor it will be AP whose 12 therms are as 8,11,14,--------41<BR>\n" );
document.write( "a=8 d=3 n=12 l=41<BR>\n" );
document.write( "sn=n(a+l)/2=12(8+41)/2=12x49/2=6x49=294<BR>\n" );
document.write( "sum of 12 terms is 294 </SPAN>\n" );
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