Question

How do you tell whether the sequence 3,5.5,8,10.5,13 is arithmetic?

Answer 1

Answer:

There is a common difference of  

2.5

Step-by-step explanation:

If there is a common difference, the sequence is arithmetic.

5.5 − 3 = 2.5

8 − 5.5 = 2.5

10.5 − 8 = 2.5

and so on.

Hope that makes sense!

Answer 2

Answer:

There is a common difference of 2.5

Explanation:

If there is a common difference, the sequence is arithmetic.

5.5−3=2.5

8−5.5=2.5

10.5−8=2.5

and so on.

Hope that makes sense