Unit Test Answers
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1
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Which of the following are geometric series? Select all that apply.
A
0.2 + 0.3 + 0.4 + 0.5B
0.2 + 0.6 + 1.8 + 5.4C
2 + 10 + 50 + 250D
2 + 4 + 6 + 8E
22 + 20 + 18 + 16F
20 + 10 + 5 + 2.52
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Select the explicit formula for the sequence that correspond to this geometric series: 6 + 18 + 54 + 162 + 486
A
ak = 6 • 3k – 1B
ak = 3 • 6k – 1C
ak = 6 • 3kD
ak = 3 • 6k3
What is the series in summation notation?
A
Option
B
Option
C
Option
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