Question

What is the common ratio in this geometric series?

a. 4
b. 5
c. i
d. 1
e. 3

Answer 1

Common Ratio. One value in the series differs from its predecessor by what?

3, 15, 75, and so on. The common ratio is 5.

Answer 2

is it 3 or 5??????

Answer 3

The common ratio is 5 in all of these geometric sequences:

1, 5, 25, 125...

2. 10, 50, 250...

3, 15, 75, ...

4, 20, 100, 500...

5, 25, 125, 625...

Okay, kaykim95, now you tell me the common ratio in your series.

Answer 4

so is it 3 or 5..................

Answer 5

You're still asking. It is time for you to stop asking and start telling. Look at my five examples and then answer the question.

Answer 6

It is 5

Answer 7

All of these sequences have a first term of 3 and the indicated common ratio:

Common Ratio of 2

3, 6, 12, 24...

Common ratio of 5

3, 15, 75...

Common Ratio of 7

3, 21, 147, ...

Notice how the first term has nothing at all to do with the common ratio. The common ratio is the relationship between successive term.

Answer 8

Perfect. Let's do another one, just to make sure you have it written in your brain! :-)

Answer 9

oka i have another one

Answer 10

Write out the series. Is there a common ratio between each successive term?

Answer 11

true or false

Answer 12

Not going to just give you the answer, you need to tell me.

Answer 13

Well, that's a bit of a different problem.

If your definition of "Geometric Series" includes Complex Numbers, then it IS. If it has to be Real Numbers, then it is NOT.

Answer 14

(2+1)^2= 9, so true

Answer 15

That's just one piece of the series. You need to look at the ratio of the first and second compared to the ratio of the second and third to see if it's a geometric series.

There are no complex numbers here @tkhunny the "i" used here is the index.

Answer 16

so it's false

Answer 17

Totally misread that. Listen to Kainui!

Answer 18

FALSE?

Answer 19

Show me the first 4 terms of the series kaykim and we'll talk about why it's true or false. You're just guessing.