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01-04-2018
Mathematics

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Write an explicit formula for the sequence 9, 13, 17, 21, 25 then find a14. Thank you.

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Аноним Аноним

01-04-2018

Note that all the terms increase by 4This is arithmetic sequence with first term 9 and common difference 4

Nth term = 9 + 4(n-1)
= 4n+5 answer

Term a14 = 4(14) + 5 = 61 Answer

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