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Determine if the sequence is arithmetic. If it is, find the term named in the problem.
-25, -17,-9,-1, ...
Find a39
Your answer:
O a39 = - 293
O a39 = - 291
O a39 = 241
a39 = 279

How do you solve this problem

Respuesta :

xenia168

Answer:

[tex]a_{39}[/tex] = 279

Step-by-step explanation:

[tex]a_{n}[/tex] = [tex]a_{1}[/tex] + (n - 1)d

d = [tex]a_{2}[/tex] - [tex]a_{1}[/tex]

~~~~~~~~~

d = - 17 + 25 = - 9 + 17 = - 1 + 9 = 8

[tex]a_{39}[/tex] = - 25 + 8(39 - 1) = 279

[tex]a_{39}[/tex] = 279

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