Question

Which sequences are arithmetic? Select three options.

–8.6, –5.0, –1.4, 2.2, 5.8, …
2, –2.2, 2.42, –2.662, 2.9282, …
5, 1, –3, –7, –11, …
–3, 3, 9, 15, 21, …
–6.2, –3.1, –1.55, –0.775, –0.3875, …

Answer 1

Which answer choices show that a constant number is being added or substracted?

Answer 2

idk

Answer 3

Let's look at your first answer choice

–8.6, –5.0, –1.4, 2.2, 5.8, …

What do you have to add to -8.6 to get -5

Answer 4

3.6

Answer 5

is it D

Answer 6

ok good, now subtract 3.6 from -5
do you get -1.4?

D is one of the correct answers, but there are 2 more

Answer 7

yes and thank u

Answer 8

what would the other 2 be

Answer 9

So would the first answer choice be arithmetic sequence?

Each time you subtract 3.6 you're getting the next value. Does this fit the definition of an arithmetic sequence?

Answer 10

yes

Answer 11

Correct

What is the last arithmetic sequence? Remember it has to be increasing (or decreasing) by a constant number

Answer 12

c

Answer 13

That's correct!

Answer 14

Good job!

Answer 15

thank u

Answer 16

No problem!