Question

chegg tell whether each sequence is arithmetic. if the sequence os arithmetic, identify the common difference and find the indicated term 3,5/2,3/2,-3/2,...

Answer 1

Take the 2nd term and minus the 1st term.

Now take the 3rd term and minus the 2nd term.

Notice that the differences are the same. Hence there is a common difference (difference of -0.5).

So it is an arithmetic sequence.