SOLUTION: S50, when a1 = 6 and d = 2/7

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Question 976758: S50, when a1 = 6 and d = 2/7
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
a(n) = a(1) +(n - 1)d
a(50) = 6 + (50 - 1)2/7
a(50) = 6 + 14
a(50) = 20
S(n) = [n(a(1)+ a(n)]/2
s(50) = [50(6 + 20)]/2
s(50) = 650
Hope this helps:-)