Question 161556This question is from textbook Arithmetic Sequences
: Please can you help me with Arithmetic Sequences because I don't know how to do it. The problem say determine whether each sequence is an arithmetic sequence. If it is, state the common difference.
The problem is 10,12,15,18,....
Thanks for your help because I don't get how to do it so if you help me out to were I can do it on my own then thanks a lot.It's on page 236 my teacher wants me to do all the even numbers on the practice and apply.
This question is from textbook Arithmetic Sequences
Answer by Earlsdon(6294)   (Show Source):
You can put this solution on YOUR website! Determine if the following sequence is arithmetic:
10, 12, 15, 18,...
You can see that:
The difference between the first and second term is 12-10 = 2.
The difference between the second and third term is 15-12 = 3.
The difference between the third and fouth term is 18-15 = 3.
The difference between the terms (2, 3, and 3) is not common so the sequence is not arithmetic, because arithmetic sequences have a common difference between consecutive terms.
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