Question

Which sequences are arithmetic?check all that apply.

Answer 1

Explanation:

An arithmetic sequence has a constant difference among the consecutive terms.

The sequence has a constant difference of -12.5

The sequence also has a common difference of 16

Therefore correct answers are C and E

Answer 2

Option C and E

EXPLANATION

An arithmetic sequence has a constant difference among the consecutive terms.

The sequence

`18,5.5,-7,-19.5,-32,...`

has a constant difference of -12.5

`d = 5.5 - 18 = - 7 - 5.5 = - 19.5 - - 7 = - 32 - - 19.5 = - 12.5`

The sequence

`16,32,48,64,80,...`

also has a common difference of 16

`d = 32 - 16 = 48 - 32 = 64 - 48 =80 -64 = 16`

Therefore correct answers are C and E