document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=996734>Question 996734</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sum of the first 50 elements of a set is 6925 with a common difference of 5. What is the first element of the set.<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 #615040 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=615040\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The sum of the first 50 elements of a set is 6925 with a common difference of 5. What is the first element of the set.<BR>\n" );
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document.write( "S(n) = (n/2)(a(1)+a(n))<BR>\n" );
document.write( "a(n) = a(1)+(n-1)d<BR>\n" );
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document.write( "Solve for a(1)::<BR>\n" );
document.write( "25(a(1)+[a(1)+49*5]) = 6925<BR>\n" );
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document.write( "2*a(1) + 245 = 277<BR>\n" );
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document.write( "2a(1) = 32<BR>\n" );
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document.write( "a(1) = 16<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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