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Vlad [161]
3 years ago
11

Find an equation for the nth term of the arithmetic sequence. -15, -6, 3, 12, ...

Mathematics
1 answer:
Mariulka [41]3 years ago
5 0

Answer: t_{n}=-15+9(n-1)

Step-by-step explanation:

The formula for finding the nth term of an arithmetic sequence is given as:

t_{n}=a+(n-1)d

a = first term = -15

d = common difference = -6 - (-15) = 9

n = number of terms

substituting into the formula , we have :

t_{n} = -15+(n-1)9

t_{n}=-15+9(n-1)

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