Question

Which explains why the sequence 81, 3, 1/9, ... is arithmetic or geometric?

Answer 1

its geometric

Answer 2

*faceplam*

Answer 3

i'll explain

Answer 4

he was right

Answer 5

Hold on it's MC.

Answer 6

want me to explain??

Answer 7

in geometric sequence common ratio is same while in arithmetic common difference is same...
iin this series u can see that common ratio us same

Answer 8

*is

Answer 9

The sequence is arithmetic because it decreaces by a factor of 1/27

The sequence is geometric becuase it decreaces by a factor of 1/27

The sequence is arithmetic because it decreaces by a factor of 3

The sequence is geometric because it decreaces by a factor of 3

Answer 10

These are my opitions

Answer 11

its B
The sequence is geometric becuase it decreaces by a factor of 1/27

Answer 12

Can you please explaine?

Answer 13

geometric sequence is like that
a, ar , ar^2 ,.......
in this sequence
a = 81
then if its geometric then ar must be equal to 3
ar = 3
putting a =81
81 x r = 3
r = 1/27

Answer 14

OK thx's!