document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1155392>Question 1155392</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The seventh term of geometric sequence is 32 and the last term is 512. If the first term is 1/2, find the number of term and the sum of the progression </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #778558 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=778558\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2^(-1) is the first term, and 2^9=512<BR>\n" );
document.write( "There are 11 terms<BR>\n" );
document.write( "the sum is 11(1-r^n)/(1-r)\r<BR>\n" );
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document.write( "=(1/2)(1-2048/-1<BR>\n" );
document.write( "=(1/2)(2047)<BR>\n" );
document.write( "=1023(1/2)<BR>\n" );
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