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05-12-2020
Mathematics

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what is the sum of the first 100 terms of the arithmetic sequence 2, 7, 12, 17?

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xianaet xianaet

05-12-2020

Answer:

25452

Step-by-step explanation:

each term goes up by 5 so the formula is 2+5(n-1) where n is the term number

so the equation is ∑n=1 101 (2+5(n-1))

∑n=1 101 (5n-3) = 25452

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