SOLUTION: The first term of an arithmetic sequence is 5 and the 11th term is 65. Find the 9th term.

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Question 819858: The first term of an arithmetic sequence is 5 and the 11th term is 65. Find the 9th term.
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi,

The first term of an arithmetic sequence is 5 and the 11th term is 65. Find the 9th term

arithmetic sequence  a%5Bn%5D=a%5B1%5D%2B%28n-1%29%2Ad

a%5B1%5D=5

a%5B11%5D=++5+%2B%2810%29%2Ad+=+65, d = 6

a%5B9%5D=+5%2B%288%29%2A6 = 53