Mathematics
Tegan939
2016-04-18 11:33:06
What is the sum of the arithmetic series below?
ANSWERS
chunkysmama79
2016-04-18 12:35:58

The question is to find the sum of the 15thb first term ( i goes from 1 to 15) for i =1, the first term is 4 for I=15, the last term = 74 Sum of the terms of a AP = (first term + last term)(number of terms/2) ₁₅ ∑F(n) = (4+74)(15/2) =585 i=₁

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