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Sequences

Sequences

Sequences: Sequential Essentials and Other Well-Timed Rhymes True or False

1. An arithmetic sequence is a sequence where -> the difference of successive terms is constant.
2. The sequence

-1, -1, -1, -1,...

is -> both arithmetic and geometric

3. The sequence

0, -3, -6, -9, ...

is -> arithmetic only.

4. The sequence

60, -30, 15, -7.5,...

is -> geometric with 

5. An arithmetic sequence has a1 = 5 and d = 9. What is a25? -> 221
6. An arithmetic sequence has a11 = 4.54 and a20 = 9.04. Find a1 and d. -> d = 0.5 and a1 = -0.46
7. A geometric sequence has a = 100,000 and r = 0.2. Find a10. -> 0.0512
8. A geometric sequence has a5 = c and a10 = d. Which of the following is true? ->
9. In a geometric sequence, the general term is given by -> an = a1rn + 1
10. An arithmetic sequence has a8 = 9.5 and a9 = 9.75. What is a2? -> 7.75

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