Question

is an arithmetic sequence the sum the 1 st and 15 th term is 40
a. what is the sum of 7 th and 9 th term
b.what is its 8 th term
c. find the sum of the first fifteen term​

Answer 1

Answer:

The sum of the first n terms of an arithmetic series is given by S, = (n + 1). Evaluate: V5n+1+Sn- m. 24. An arithmetic series has a common difference d, where d>0.

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