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Look at the following sequence. 128, 320, 800, 2000, . . . If it is a geometric sequence, choose the common ratio. If it is not a geometric sequence, choose “not geometric.” 4 not geometric 2.5 1200

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4 votes

Answer:

2.5!!

Explanation:

100% correct

User Brebs
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2 votes

Answer:

It is a geometric sequence en the common ratio is:
r=(5)/(2).

Explanation:

1. By definition, a geometric sequence is a sequence in which you obtain a term by multiplying the previous one by a common ratio.

2. The common ratio is obtained by dividing a term by its preceding term.

3. Keeping this on mind, you have:


(320)/(128)=(5)/(2)\\


(800)/(320)=(5)/(2)


(2000)/(800)=(5)/(2)

4. As you can see, the common ratio is
(5)/(2)


User Eyecreate
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