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OpenStudy (anonymous):
Given the arithmetic sequence –6, 1, 8…, evaluate 12 sigma notation n=9 an (n is a subscript)
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OpenStudy (anonymous):
i know how to get the sum of the first 12terms. now what?
OpenStudy (anonymous):
Is this what we are looking for? \[\sum_{9}^{12} Arithmetic sequence\]
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