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what is the sum of a 17-term arithmetic sequence

0 votes

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

asked Aug 6, 2013 in ALGEBRA 2 by harvy0496 Apprentice

1 Answer

0 votes

Given that first term and last terms are

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Formula for  sum of the nth term in the sequence is

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To find the 17th term in the sequence

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image

image

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

answered Aug 6, 2013 by jouis Apprentice

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