3 years ago

(07.05) Graph the first six terms of a sequence where a = -10 and d = 3.

1 answer:

7 0

Answer:

Step-by-step explanation:

Using the formular, Sn = n/2(2a + (n - 1)d)

where, n = 6: Sn = 6/2( -20 + 5(3)) = 3(15 - 20)

∴ Sn = 15

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