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3 years ago

13

Urgent help! refer to photo

1 answer:

vladimir1956 [14]3 years ago

7 0

The answer is a, a=15

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mestny [16]

Answer:

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Step-by-step explanation:

a_38 = -5

difference d= -2.9

We use general formula

$a_n = a_1 + (n-1)d$

WE make the formula for a_38 th term

Plug in 38 for n

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Now plug in -2.9 for d and -5 for a_38

$-5 = a_1 + (38-1)(-2.9)$

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Now add 107.3 on both sides

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