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OpenStudy (anonymous):
a = 18, d = –10, n = 12
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OpenStudy (anonymous):
What is the question?
OpenStudy (anonymous):
Find the sum of the given arithmetic series
OpenStudy (anonymous):
Sequence: 18, 8, -2, -12, -22, -32, -42 ... The 12th term: -92 Sum of the first 12 terms: -444
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