dakscable47 dakscable47

01-10-2022
Mathematics

Answered

Find the sum Sn of each arithmetic sequence.

1. 2,5,8, ... to 12 terms
2. 3,6,9, ... to 32 terms
3. 1.4, 4.5, 7.6, ... to 21 terms
4. x-2, 4x, 7x+2, ... to 12 terms

Answer :

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