SOLUTION: Find the sum of 15 terms of an arithmetic series if the middle term is 92
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Question 1150958: Find the sum of 15 terms of an arithmetic series if the middle term is 92
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!
The sum of the terms of an arithmetic sequence is the number of terms, multiplied by the average of the terms.
In an arithmetic sequence with an odd number of terms, the average of the terms is the middle term. So
ANSWER: 15(92) = 1380
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