Question

I think its A but can someone tell me if i'm right?

Identify which of the sequences below is a geometric sequence.
A.
2, 4, 6, 8, ...
B.
3, 6, 18, 54, ...
C.
2, 6, 18, 54, ...
D.
2, 6, 18, 36, ...

Answer 1

Nevermind i think it is C

Answer 2

A geometric sequence is when the next number is found by multiplying.
ok..you changed your answer to C....that is correct

Answer 3

So a geometric sequence will always b multiplied?

Answer 4

D is correct.
Geometric sequences have a common ratio, i.e. the ratio between consecutive terms are always equal.

Answer 5

yes...and an arithmetic sequence is added

Answer 6

So arent D and C both multiplied? Theyre both correct.

Answer 7

C's common ratio is 3 while d's is 2

Answer 8

no....they need a constant ratio that is the same. The constant ratio for C is 3. D does not have a constant ratio that stays the same. Understand ?

Answer 9

D does not have the same common ratio...it is not 2

Answer 10

oh wow i was looking at a different problem

Answer 11

Yeah its C, my bad

Answer 12

I was looking at

Answer 13

yep...its C

Answer 14

Identify which of the sequences below is a geometric sequence.
A.
1, 3, 5, 7, –9, …
B.
2, 4, –6, 8, 10, …
C.
2, 5, 7, 10, 12, …
D.
3, 6, 12, 24, 48, …

Answer 15

what do you think ?

Answer 16

D

Answer 17

yep..its D, with the common ratio being 2

Answer 18

Alright, thank you.

Answer 19

anytime :)