History, 22.03.2020 20:19, Turtles8276

Find the number of terms, n, of the arithmetic series given a = 21, an = 39, and Sn = 210.
A.7
B. 8
C. 9
D.5

Answers: 2

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Find the number of terms, n, of the arithmetic series given a = 21, an = 39, and Sn = 210.
A.7...