Question

Which of the following are arithmetic sequences? Check all that apply.

Answer 1

Answer:

Only A

Step-by-step explanation:

A. This is the arithmetic sequence, because

$0.6-0.3=0.9-0.6=1.2-0.9=1.5-1.2=0.3.$

The first term of this sequence is $0.3$ and the difference is 0.3.

B. Since $3-2\neq 6-3,$ this is not arithmetic sequence.

C. Since $150-147=147-144\neq 144-142,$ this is not arithmetic sequence.

D. Since $4-2\neq 9-4,$ this is not arithmetic sequence.