The formula for any arithmetic sequence is an = a1 + d (n - 1), where an represents the value of the n th term, a1 represents the value of the first term, d represents the common difference, and n represents the term number. What is the formula for the sequence 10, 8, 6, 4, ... ?

an = 10 + (-2) (n - 1)

an = 10 + 2 (n - 1)

an = - 2 + 10 (n - 1)

an = 2 + 10 (n - 1)

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Mathematics

Guest

5 November, 04:30

The formula for any arithmetic sequence is an = a1 + d (n - 1), where an represents the value of the n th term, a1 represents the value of the first term, d represents the common difference, and n represents the term number. What is the formula for the sequence 10, 8, 6, 4, ... ?

an = 10 + (-2) (n - 1)

an = 10 + 2 (n - 1)

an = - 2 + 10 (n - 1)

an = 2 + 10 (n - 1)

+3

Answers (1)

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Precious Navarro · Answer 1

10, 8, 6, 4, ...

-2 - 2 - 2

a (n) = a₁ + d (n - 1)

a (n) = 10 - 2 (n - 1)

a (n) = 10 - 2 (n) + 2 (1)

a (n) = 10 - 2n + 2

a (n) = - 2n + 10 + 2

a (n) = - 2n + 12