SOLUTION: The first term of a geometric sequence is 5 and the third term is 7.2.Which of the
following can be the fifth term?
(A) 8.85 (B) 9.4 (C) 10.368 (D) 11.646 (E) 12.4416
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Sequences-and-series
-> SOLUTION: The first term of a geometric sequence is 5 and the third term is 7.2.Which of the
following can be the fifth term?
(A) 8.85 (B) 9.4 (C) 10.368 (D) 11.646 (E) 12.4416
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Question 367620: The first term of a geometric sequence is 5 and the third term is 7.2.Which of the
following can be the fifth term?
(A) 8.85 (B) 9.4 (C) 10.368 (D) 11.646 (E) 12.4416 Answer by robertb(5830) (Show Source):
You can put this solution on YOUR website! B) 9.4.
the difference between the 1st and 3rd terms is 2.2. Dividing this by 2 gives 1.1, and this is the common difference d. Adding 2.2 to 7.2 gives the 5th term , which is 9.4.
