I need to find the sum of the terms of the series 4+7+10+.....+22

genestesya 2022-09-14 Answered
I need to find the sum of the terms of the series 4+7+10+.....+22
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Answers (1)

Karla Bautista
Answered 2022-09-15 Author has 16 answers
It is the sum of an arithmetic progression (series) with first term
a 1 = 4 and ratio r=3
The sum is
S 7 = 7 2 ( a 1 + a 7 ) = 7 2 ( 4 + 22 ) = 7 13 = 91
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