document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1206399>Question 1206399</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the 21st term of an arithmetic sequence whose first term is 9x and whose common difference is x + y. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #843838 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=843838\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the 21st term of an arithmetic sequence whose first term is 9x and whose common difference is x + y.\r<BR>\n" );
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document.write( "The nth term of an  arithmetic sequence  is\r<BR>\n" );
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document.write( "tn= a+(n-1) *d\r<BR>\n" );
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document.write( "a=first term =9x<BR>\n" );
document.write( "d=common difference is x + y.\r<BR>\n" );
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document.write( "t(21)= 9x +(21-1)(x+y)\r<BR>\n" );
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document.write( "t(21) = 9x+20(x+y)\r<BR>\n" );
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document.write( "t(21) =9x+20x+20y\r<BR>\n" );
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document.write( "= 29x+20y\r<BR>\n" );
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document.write( " </SPAN>\n" );
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