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7 votes
1. Which of the following is a geometric sequence?

5, -25, 125, -625,...
100,50, 0, -50,...
13,16,19, 22,...
2,4, 16,48,...

User Tienph
by
7.8k points

2 Answers

5 votes

Answer:

5, -25, 125, -625,...

Explanation:

In order to test if something is geometric, just divide each element by the previous element. It is geometric if the number is always the same.

-25/5=-5

125/-25=-5

-625/125=-5

The other options do not fall into this pattern.

User Tonymke
by
8.0k points
6 votes

Answer:

5, -25, etc

Explanation:

It involves multiplying to get each answer, so it is geometric

User Nuala
by
7.6k points

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