document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=843458>Question 843458</A>: <I><SPAN STYLE=\"word-break: break-all;\"> -the 4th term of an AP is 7 and the 9th term is 17 find the 15th term ??<BR>\n" );
document.write( "-if 4 times the 4th term of an AP is equal to 7 times the 7th term,find its 11th term<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 #508104 by </B><A HREF=/tutors/aboutme.mpl?userid=TheInstructor><B>TheInstructor(29)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TheInstructor><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=508104\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hey!\r<BR>\n" );
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document.write( "T4= a+3d =7  ----- (1)<BR>\n" );
document.write( "T9= a+8d =17 ----- (2)\r<BR>\n" );
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document.write( "(2)-(1)<BR>\n" );
document.write( "Therefore 5d = 10<BR>\n" );
document.write( "d=2 \r<BR>\n" );
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document.write( "a+ 6= 7<BR>\n" );
document.write( "Therefore a = 1\r<BR>\n" );
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document.write( "T15= a+14d<BR>\n" );
document.write( "T15 = 1 + 14(2) = 29\r<BR>\n" );
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