IvanMunoz518
IvanMunoz518 IvanMunoz518
  • 18-07-2017
  • Mathematics
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What is the sum of the arithmetic series below?

What is the sum of the arithmetic series below class=

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mreijepatmat
mreijepatmat mreijepatmat
  • 18-07-2017
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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