don't understand

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404

1

+293

please explain how to do this.

Cdortch Dec 3, 2020

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1⁺⁰ Answers

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This is given by: Sn = ½ n [ 2a + (n - 1)d ] you are given all of the inputs.....this is HOW you solve it. (a is a₁)

Guest Dec 3, 2020

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