Question
Asked Dec 19, 2019
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Find the sum of the first 35 terms of the arithmetic sequence −1, −9, −17, −25, ….

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Expert Answer

Step 1

Given the arithmetic series

-1,-9,-17,-25..

Step 2

Here,

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Here, total term n= 35 first term a =-1 common ratio d =-9+1=-8

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Step 3
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Write the formula of the nth sum of arithmetic series [2a+(n-1)d]

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Algebra

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