Question

What is the common ratio of the following sequence?

-5, -20, -80, ...

-4

4

Answer 1

will give medal

Answer 2

Given -5, how would you get to -20? Given -20, how would you get to -80?
This is what we mean by "common ratio."

Answer 3

so how would you get the answer

Answer 4

@twvogels

Answer 5

how do you get from -4 to -20 ? remember 2 negatives equal a positive

Answer 6

times 5??

Answer 7

@james1107: I am asking YOU how we'd get the answer. I asked you what mathematical operation would get you from -5 to -20. Should you add, subtract, multiply or divide? By what? Come on, James...think about this please.

Answer 8

Multiply -5 by 5. do you get -20?

Answer 9

no it would be-25

Answer 10

@Dani_Rose

Answer 11

True. Therefore, 5 is not the common ratio.

Try again.

Multiplying -5 by the common ratio should give you -20. What is the common ratio?

Answer 12

4

Answer 13

Multiply -20 by 4. What do you get?

Answer 14

-80
thank u

Answer 15

So your common ratio is 4. That's it. Glad you 've found your own answer.

Answer 16

Where do those -4 and 4 come from? Same problem, or separate problem, or choices, or what? Please be clear.

Answer 17

same

Answer 18

Please list them as possible answers:

a) -4

b) 4

c) 5

d( whatever


and so on.

Answer 19

s