IDNLearn.com: Where your questions meet expert advice and community support. Ask your questions and receive comprehensive and trustworthy answers from our experienced community of professionals.

Tel whether each sequence is an arithmetic sequence or not

Tel Whether Each Sequence Is An Arithmetic Sequence Or Not class=

Sagot :

Answer:

Explanations:

Note that for a sequence to be arithmetic, there must be a common difference, d.

Considering each of the sequences provided:

For -1, 3, -9, 27, -81.........

3 - (-1) = 4

-9 - 3 = -12

27 - (-9) = 36

Since the differences between consecutive terms are not common, this is not an arithmetic sequence.

For 1, -2, -5, -8, -11....

-2-1 = -3

-5 -(-2) = -3

-8 - (-5) = -3

-11 - (-8) = -3

Since there is a common difference, d = -3, the sequence is an arithmetic sequence

For 26, 39, 52, 65, 78.....

39 - 26 = 13

52 - 39 = 13

65 - 52 = 13

78 - 65 = 13

Since there is a common difference of