SOLUTION: Find the sum of the arithmetic sequence: 56, 58, 60, 62, …, 78

SOLUTION: Find the sum of the arithmetic sequence: 56, 58, 60, 62, …, 78

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Question 1137607: Find the sum of the arithmetic sequence: 56, 58, 60, 62, …, 78
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
General term of sequence, ;

78 is at index

Sequence is 12 terms in length.

SUM:

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