Find the value of k so that k– 3, k + 1, 4k – 2 will form a geometric sequence.
Identify if the sequence is arithmetic or geometric.
1. 4, 8, 12, 16, …
2. 1,5, 25, 125, 625, …
3. 135, 110, 85, 60, …
4. 12, 36, 108, 324, …
5. 81, 27, 9, 3, 1, …
Write the common ratio and the next terms in the following geometric sequence.
1.64, 16, 4, _____, _____
2.405, 135, 45, _____, _____
3.Find the 7
th term in the geometric sequence with a1 = 5 and r = 4.
4.What is the 9
th term in the geometric sequence -1, 2, -4, 8, -16, …?
5.Find the first term of a geometric sequence whose
7
th term is 256 and whose common ratio is 2.
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