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02-05-2021
Mathematics

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7. Find S 14 for the arithmetic sequence. 101+98+95+92+..

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Аноним Аноним

02-05-2021

Step-by-step explanation:

[tex]S _{n} = \frac{n}{2} (2a + (n - 1)d) \\ S _{14} = \frac{14}{2} ((2 \times 101) + (14 - 1) \times -3) \\ =1,141[/tex]

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