Answers

  • Brainly User
2016-07-03T00:43:36+08:00
N = 16
d = 4
a₁ = 8

Solution:

 S_{n} = \frac{n}{2} [2(a _{1}) + (n-1)(d)]

S₁₆ = 16/2 [2(8) + (16-1)(4)]

S₁₆ = 8 [16 + (15)(4)]

S₁₆ = 8 [16 + 60]

S₁₆ = 8 (66)

S₁₆ = 608
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