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hjlf
3 years ago
5

Write an explicit formula for An, the nth term of the sequence 15, 8, 1, ....

Mathematics
2 answers:
maks197457 [2]3 years ago
6 0

Answer:

a_{n} = 22 - 7n

Step-by-step explanation:

There is a common difference d between consecutive terms, that is

8 - 15 = 1 - 8 = - 7

This indicates the sequence is arithmetic with explicit formula

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 15 and d = - 7 , then

a_{n} = 15 - 7(n - 1) = 15 - 7n + 7 = 22 - 7n ← explicit formula

ipn [44]3 years ago
4 0

Answer:

b(n) = 15 - 7(n - 1)

Step-by-step explanation:

15 is the y-intercept

-7 is the slope

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