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OpenStudy (anonymous):
What is the sum of a 23-term arithmetic sequence where the first term is 9 and the last term is 163?
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OpenStudy (anonymous):
\[Sum = \frac{n}{2}(a + l)\] a = first term and l = last term..
OpenStudy (anonymous):
Put n= 23, a = 9 and l = 163 in the above formula and then find Sum.. Can you do that??
OpenStudy (anonymous):
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