Homework Help: math

Posted by Alicia on Friday, December 9, 2011 at 11:08am.

Find the 265th term of an arithmetic sequence whose second term is 5/8 and whose 9th term is 71/24 pls help asap

math - Reiny, Friday, December 9, 2011 at 11:26am
a+d = 5/8
a + 8d = 71/24
subtract
7d = 7/3
d = 1/3
then in a+d = 5/8
a = 5/8 - 1/3 = 7/24

term 265 = a + 264d
=7/24 + 264/3 = 2119/24

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