infinite algebra 2 - unit 5 day 11 warm...
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Worksheet by Kuta Software LLC
Math 3 Honors
Unit 5 Day 11 Warm Up©^ _2j0X1X7X EKnu]ttaR WSfoefutwwoaNrBer YLRLvCO.K s ]APlQlu Prci]gxhztusk orae_s^eyrnvOeEdJ.
Determine if the sequence is geometric. If it is, find the common ratio, the term named in theproblem, and the explicit formula.
1) -2, 4, -8, 16, ...Find a
11
2) 10, 8, 6, 4, ...Find a
11
3) -2, -4, -8, -16, ...Find a
9
4) 3, -6, 12, -24, ...Find a
10
5) 4, -8, 16, -32, ...Find a
9
6) -3, 9, -27, 81, ...Find a
11
Find the missing term or terms in each geometric sequence.
7) ..., 1, ___, 25, ... 8) ..., 3, ___, 108, ...
9) ..., -4, ___, -16, ... 10) ..., 2, ___, 50, ...
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Worksheet by Kuta Software LLC
Math 3 Honors
Unit 5 Day 11 Warm Up©H S2b0J1\7X eKcuXt]aj jSToRfqtJwAazr^eA qLmLGCS.T q XATlXlp \rniagLhvtgsW srxeus[enrlvfeidC.
Determine if the sequence is geometric. If it is, find the common ratio, the term named in theproblem, and the explicit formula.
1) -2, 4, -8, 16, ...Find a
11
Common Ratio: r = -2a
11 = -2048
Explicit: an = -2 × (-2)n - 1
2) 10, 8, 6, 4, ...Find a
11
Not geometric
3) -2, -4, -8, -16, ...Find a
9
Common Ratio: r = 2a
9 = -512
Explicit: an = -2 × 2
n - 1
4) 3, -6, 12, -24, ...Find a
10
Common Ratio: r = -2a
10 = -1536
Explicit: an = 3 × (-2)n - 1
5) 4, -8, 16, -32, ...Find a
9
Common Ratio: r = -2a
9 = 1024
Explicit: an = 4 × (-2)n - 1
6) -3, 9, -27, 81, ...Find a
11
Common Ratio: r = -3a
11 = -177147
Explicit: an = -3 × (-3)n - 1
Find the missing term or terms in each geometric sequence.
7) ..., 1, ___, 25, ...
5
8) ..., 3, ___, 108, ...
18
9) ..., -4, ___, -16, ...
-8
10) ..., 2, ___, 50, ...
10