document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1083476>Question 1083476</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Evaluate each arithmetic series described. <BR>\n" );
document.write( "A1=3/2 d=1/2 n=50 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #697471 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=697471\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A1=3/2 , d=1/2<BR>\n" );
document.write( "A50=A1+(50-1)×d=3/2+49×(1/2)=1+1/2+49×(1/2)=1+(49+1)×(1/2)=1+50×(1/2)=1+25=26.<BR>\n" );
document.write( "A1+A2+A3+....+A50=50×(A1+A50)/2=25×(3/2+26)=25×(3/2+52/2)=25×55/2=1375/2=687.5 </SPAN>\n" );
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