Question

1. Select all sequences that could be geometric.
A. 2, 4, 7, 11,...
B. ,1,3,9,...
C. 1, 3, 5, 7, ...
D. 1, 2, 8, 32, ..
E. 1,000, 200, 40, 8, ....
F. 999, 899, 799, 699,...

Answer 1

Answer:

B and E

Step-by-step explanation:

Geometric sequences increase or decrease by the same multiple between successive terms.

B => from one term to the next we multiply by 3, i.e. 1 x 3 = 3, then 3 x 3 = 9, then 9 x 3 = 27 and so on

E => here we multiply by 1/5, i.e. 1000 x 1/5 = 200, then 200 x 1/5 = 40, then 40 x 1/5 = 8 and so on.

Answer 2

The correct option is B and E

The following information should be considered:

• Geometric sequences increase or decrease by the same multiple that lies between successive terms.
• The option B represent from one term to the next we multiply by 3, i.e. 1 x (3) = 3, then 3 (3) = 9, then 9 (3) = 27 and so on .
• The option E represent we multiply by 1 by 5, so 200, then 200 by 1/5 = 40, then 40 by 1/5 = 8 and so on.

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