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mel-nik [20]
2 years ago
15

Find an equation for the nth term of the arithmetic sequence.

Mathematics
2 answers:
Oksana_A [137]2 years ago
6 0

Answer:

Option B.

Step-by-step explanation:

The given arithmetic sequence is

-13,-8,-3,2,...

We need to find the nth term of the given arithmetic sequence.

Here,

First term : a=-13

Common difference : a_2-a_1=-8-(-13)=-8+13=5

The nth term of an arithmetic sequence is  

a_n=a+(n-1)d

where, a is first term and d is common difference.

Substitute a=-13 and d=5 in the above formula.

a_n=-13+(n-1)5

a_n=-13+5(n-1)

Therefore, the correct option is B.

vekshin12 years ago
5 0
The answer is the second answer choice, an = -13 + 5(n - 1)
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