Geometric Sequences Question 9 Find the 30th term of the geometric sequence 100, 80, 64,... Give your answer to 3 significant figures. [Answer format: 0.000]
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Identify the first term (a) and the common ratio (r) of the geometric sequence. The first term is 80, and the common ratio can be found by dividing the second term by the first term: r = 64/80 = 0.8. Show more…
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