document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=26498>Question 26498</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help with this question, I have a few of the answers but need the rest.<BR>\n" );
document.write( "Thanks Jeff<BR>\n" );
document.write( "1)	Use the arithmetic series of numbers 1, 3, 5, 7, 9,…to find the following:<BR>\n" );
document.write( "a)	What is d, the difference between any 2 terms? <BR>\n" );
document.write( "Answer:  2<BR>\n" );
document.write( "Show work in this space.	<BR>\n" );
document.write( "1+2=3+2=5+2=7+2=9<BR>\n" );
document.write( "b)	Using the formula for the nth term of an arithmetic series, what is 101st term? Answer:	<BR>\n" );
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document.write( "c)	Using the formula for the sum of an arithmetic series, what is the sum of the first 20 terms?   400<BR>\n" );
document.write( "d)	Answer:Show work in this space\r<BR>\n" );
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document.write( "e)	Using the formula for the sum of an arithmetic series, what is the sum of the first 30 terms?<BR>\n" );
document.write( "Answer:	<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 #14363 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=14363\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The 1st term is a(1)=1<BR>\n" );
document.write( "d is the difference between any two consecutive terms: e.g. d=3-1=2<BR>\n" );
document.write( "The nth term is a(n)=a(1)+(n-1)d<BR>\n" );
document.write( "The sum of n terms is S(n)=(1/2)n[a(1)+a(n)]<BR>\n" );
document.write( "101st term: a(101)=a(1)+(100)d<BR>\n" );
document.write( "                  =1+100*2=201<BR>\n" );
document.write( "Sum of 1st 20 terms:<BR>\n" );
document.write( "a(20)=1+(19)2=1+38=39<BR>\n" );
document.write( "S(20)=(1/2)(20)(1+39)<BR>\n" );
document.write( "     =10(40)=400<BR>\n" );
document.write( "Sum of 1st 30 terms:<BR>\n" );
document.write( "a(30)=a(1)+29(2)<BR>\n" );
document.write( "     =1+58=59<BR>\n" );
document.write( "S(30)=(1/2)(30)(1+59)<BR>\n" );
document.write( "     =15(60)<BR>\n" );
document.write( "     =900<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "stan H.<BR>\n" );
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