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Find the specified value for the arithmetic sequences with the given characteristics. a17 = 47 d = -3 a35= ?

Respuesta :

ANSWER

The 35th term is -8

EXPLANATION

The nth term of an arithmetic sequence is given by

[tex]a_n = a_1 + d( n - 1)[/tex]

We have the 17th term to be;

[tex]a_{17}=47[/tex]

and the common difference is d=-3

We substitute to get:

[tex]47= a_1 + - 3(1 7- 1)[/tex]

[tex]47= a_1 + 16( - 3)[/tex]

[tex]47= a_1 - 48[/tex]

[tex]a_1 = 48 + 47 = 95[/tex]

We can now find the 35th term:

[tex]a_{35}=a_{1} + 34d[/tex]

[tex]a_{35}=95 + 34( - 3) = - 8[/tex]