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11. Is the sequence 5, 9, 15, ... an arithmetic sequence? Explain.

2 Answers

5 votes
No. Because from 5 to 9 you add 4 and from 9 to 15 you add 6. So, it's not consecutive or constant
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User Ralf Stuckert
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3 votes
No, because arithmetic sequences are done by adding. The difference between the numbers must be the same
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User Chendesheng
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