document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=693435>Question 693435</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the sum of the arithmetic series below?\r<BR>\n" );
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document.write( "2 + 5 + 8 + ... + 56 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #427389 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=427389\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the sum of the arithmetic series below? <BR>\n" );
document.write( "2 + 5 + 8 + ... + 56<BR>\n" );
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document.write( "1st: What is the rank of the final term,i.e. 56?<BR>\n" );
document.write( "Note: a(1) = 2 and d = 3<BR>\n" );
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document.write( "56 = 2 + (n-1)3<BR>\n" );
document.write( "54 = (n-1)3<BR>\n" );
document.write( "n-1 = 18<BR>\n" );
document.write( "n = 19, so 56 is the 19th term.<BR>\n" );
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document.write( "2nd: Find the sum:<BR>\n" );
document.write( "Sum = (19/2)(2+56) = 19(29) = 551<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "====================<BR>\n" );
document.write( " </SPAN>\n" );
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