Question

The fifteenth term of an arithemetic sequence is zero. find the sum of the first 29terms of the sequence​

Answer 1

The formula says that the sum of the first n terms of our arithmetic sequence is equal to n divided by 2 times the sum of twice the beginning term, a, and the product of d, the common difference, and n minus 1. The n stands for the number of terms we are adding together.
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