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Mathematics 9 Online
OpenStudy (kingj):

What is the sum of the arithmetic sequence 3, 9, 15…, if there are 24 terms?

OpenStudy (anonymous):

using the formula for arithmetic sequnces, find the 24th term. .

OpenStudy (kingj):

What would be the answer?

OpenStudy (anonymous):

using the formula. .|dw:1331165405985:dw| plug the value of n=24 ; given the 24th term, plug it to the value for a sub n and a sub 1 which is 3

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