Find 15th term of the arithmetic sequence 17, 24, 31, …

Beckett Henry 2022-09-14 Answered
Find 15th term of the arithmetic sequence 17, 24, 31, …
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Answers (1)

adwelirlz
Answered 2022-09-15 Author has 10 answers
This is an arithmetic sequence, so it must have a common difference:
d = 24 - 17 = 7
Now to write formula to find the fifteenth term:
a 15 = a 1 + 7 ( 15 - 1 )
a 15 = 17 + 98 = 115

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