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12-05-2020
Mathematics

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What is the term to term rule: 21, 17, 13, 9, 5, 1

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Аноним Аноним

12-05-2020

Answer:

An = A(n-1) - 4

Step-by-step explanation:

21 - 17 = 4

17 - 13 = 4

13 - 9 = 4

9 - 5 = 4

5 - 1 = 4

ratio = 4

An = A(n-1) - 4

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