Question

Which of the following sequences are ***NOT*** geometric?

A. 1, 4, 9, 16, 25, 36

B. 1, 1, 2, 3, 5, 8, 13, 21

C. -4, -2, -1, -0.5, -0.25, -0.125

D. 2, 10, 50, 250, 1250


***Chooose ALL that apply!! thanks!!

Answer 1

A and B, b/c they dont have a common ratio.

Answer 2

oh okay :) and what are C and D's common ratios??

C=divided by 2 right??

D=x 5 right??

Answer 3

No, the common ratio of C is 0.5 or 1/2
the common ratio of D is 5 or 5/1

Answer 4

oh oaky i see :) but my answers are A and B then!! :D thanks for the help!!!

Answer 5

Np.

Answer 6

A and B are not geometric because there is no factor that generates the next term.

In A, we have 1^2, 2^2, 3^3, 4^2, ...
B is the Fibonacci sequence where each term at position 3 and onward is gotten by adding the two previous terms.
C is ok because each is multiplied by 1/2
D is ok. Multiplied each one by 5 to get the next one.

Answer 7

kk thanks :)

Answer 8

can someone pls give @tcarroll010 a medal? i can only give one :(

Answer 9

I gave the medal to @tcarroll010

Answer 10

nice people here!

Answer 11

:) thanks for giving @tcarrol010 a medal @Brittni0605 :D and thanks for all the help !! =D