Question

Identify the sequence as arithmetic, geometric or neither. Explain your answer. here are the numbers: 1.6, 0.8, 0.4, 0.2.

Answer 1

An arithmetic sequence is a sequence in which the numbers have a common distance between them, for example: 2,3,4,5,... the common distance is 1.
A geometric sequence is a sequence in which a common ratio is used. This problem has a common ratio of 1/2.
1.6/2=0/8 
0.8/2=0.4
0.4/2=0.2

Hope this helped! (: