Mathematics, 21.12.2021 18:20, bjbass899
Directions: Use the formula Sn =a (1 - rn ) ÷ (1 – r) to find the sum Sn for each of the infinite and finite geometric series.
9. The first 9 terms of 12, – 6 ,+ 3, - …
10. The first 15 terms of -1, + 1, -…
11. The first 6 terms of 1, + 3, + …
12. The first 10 terms of 2, – 4, + …
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Directions: Use the formula Sn =a (1 - rn ) ÷ (1 – r) to find the sum Sn for each of the infinite an...
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