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Identify which of the following is an arithmetic sequence.

Question 13 options:

1, 2, 4, 7, . . .


1, 3, 9, 27, . . .


−2, 0, 4, 8, . . .


3, −1, −5, −9, . . .

User Nagordon
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The answer would be the bottom option (3, -1, -5, -9).

In order to have an arithmetic sequence, you must have a common difference or the constant you add by every number in the sequence.

The bottom option (3, -1, -5, -9) would be an arithmetic sequence since it is the only option in which you add by a common difference of -4.
User Chayala
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Answer:

Explanation:

User Martin Jakubik
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