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velikii [3]
3 years ago
10

Find a formula for the nth term of the arithmetic sequence

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
7 0

Answer:

11+2n

Step-by-step explanation:

Arithmetic sequence=a+(n-1)d

a=first number

n=nth term

d=difference

a=9

n=?

d=-2

So let's solve

9+(n-1)(-2)

9+(2n+2)

9+2n+2

Collect like terms

9+2+2n

11+2n

So the nth term is 11+2n

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Answer:

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Step-by-step explanation:

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This simplifies to x^2+4x+4

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