document.write( "Question 1091989: Find the 3rd term of an arithmetic sequence with t2 =9/2 and t5 = 6.\r
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\n" ); document.write( "\n" ); document.write( "A. 5
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\n" ); document.write( "B. 4
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\n" ); document.write( "C. 3
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\n" ); document.write( "D. 2\r
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Algebra.Com's Answer #706498 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
given:
\n" ); document.write( "\"t%5B2%5D+=9%2F2\" and \"t%5B5%5D+=+6\"\r
\n" ); document.write( "\n" ); document.write( "\"+t%5B1%5D+%2B+d+=+9%2F2\"......(1) where \"t%5B1%5D\" is first term and \"d\" common difference\r
\n" ); document.write( "\n" ); document.write( "\"t+%2B+4d+=+6\"........(2)\r
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\n" ); document.write( "\n" ); document.write( "Subtract (1) from (2\r
\n" ); document.write( "\n" ); document.write( "\"3d+=+3%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"d+=+1%2F2\"\r
\n" ); document.write( "\n" ); document.write( "Sub in (1)\r
\n" ); document.write( "\n" ); document.write( "\"t%5B1%5D+%2B+1%2F2+=+9%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"t%5B1%5D+=+4\"->first term \"%0D%0A%0D%0AThird+term+%7B%7B%7Bt%5B3%5D=+t%5B1%5D+%2B+2d\"\r
\n" ); document.write( "\n" ); document.write( "\"t%5B3%5D=+4+%2B+2%281%2F2%29\"\r
\n" ); document.write( "\n" ); document.write( "\"t%5B3%5D=+5+\"\r
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\n" ); document.write( "\n" ); document.write( "so, your answer is A. \"5\"\r
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