SOLUTION: For an arthmetic sequence with t6 = -24 and t14 = 6. Find S10. (6th term is -24, 14th term is 6, hence find the sum of the first 10 terms)

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Question 1108767: For an arthmetic sequence with t6 = -24 and t14 = 6. Find S10.
(6th term is -24, 14th term is 6, hence find the sum of the first 10 terms)
Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
Eight common differences from n=6 to n=14



General term, .

Find A, picking the n=6 term:



-
General Term,

Sum the first 10 terms:

Simplify and compute this.
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