trinimichaela trinimichaela

10-12-2020
Mathematics

contestada

Given a term in an arithmetic sequence and the common difference, find the first five terms

1) a35 = -312, d = -10

I need the answer fast and if you can, please explain.

Respuesta :

nadia2318116 nadia2318116

11-12-2020

Step-by-step explanation:

we come with a1

a(n) = a1 +(n-1)d

a(35) = a1 +(35-1)-10=-312

So a1=-312+340= 28

first five terms:

a1= 28

a(2) = 28 +(2-1)-10=18

a(3) = 28 +(3-1)-10=8

a(4) = 28 +(4-1)-10=-2

a(5) = 28 +(5-1)-10=-12

hope it helps

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