document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1138516>Question 1138516</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1) In an arithmetic sequence, a4=8 and a7=26. Find a1 and d. Write the first 5 terms of the sequence.\r<BR>\n" );
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document.write( "2) find the sum \r<BR>\n" );
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document.write( "3) find the sum \r<BR>\n" );
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document.write( "4) Find the first \r<BR>\n" );
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document.write( "5) Find a7 \r<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 #837868 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=837868\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In an Arithmetic sequence\r<BR>\n" );
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document.write( "A[n]= a+(n-1)d\r<BR>\n" );
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document.write( "a4=8 =a+3d................................1\r<BR>\n" );
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document.write( "a7=26=a+6d..............................2\r<BR>\n" );
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document.write( "solve 1 &2\r<BR>\n" );
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document.write( "subtract 1 from 2\r<BR>\n" );
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document.write( "6d-3d = 18<BR>\n" );
document.write( "3d=18<BR>\n" );
document.write( "d= 6<BR>\n" );
document.write( "a+3d =8<BR>\n" );
document.write( "a+3(6)=8<BR>\n" );
document.write( "a=-10\r<BR>\n" );
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document.write( "First five terms -10,-4,2,8,14\r<BR>\n" );
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