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what is the sum of a 17-term arithmetic sequence

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where the first term is 9 and the last term is -87

arthametic-series

asked Aug 6, 2013 in ALGEBRA 2 by harvy0496 Apprentice

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1 Answer

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Given that first term and last terms are

Formula for sum of the nth term in the sequence is

To find the 17th term in the sequence

Therefore sum of the 17th term in the sequence is -663

answered Aug 6, 2013 by jouis Apprentice

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