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elena-14-01-66 [18.8K]
3 years ago
13

14 A formula for determining the finite sum, S, of an arithmetic sequence of numbers is

Mathematics
2 answers:
allochka39001 [22]3 years ago
6 0

Answer:

You can download the answer here. Link below!

Step-by-step explanation:

Advocard [28]3 years ago
4 0

Answer:

b = 2S/n - a.

Step-by-step explanation:

S=n/2(a + b)

a + b = S / n/2

a + b = 2S/n

b = 2S/n - a.

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