For each sequence, determine whether it appears to be arithmetic, geometric, or neither. 1. 2, 4, 6, 8, ... 2. 9, 16, 25, 36, ... 3. 64, 32, 16, 8, ...

Question

asked Nov 14, 2021 140k views

1 Answer

AlexJReid · Answer 1 · 2021-11-18T04:29:33+0000

Explanation:

1. 2, 4, 6, 8, ...

This sequence has a common difference (+ 2). So it is arithmetic.

2. 9, 16, 25, 36, ...

This sequence has neither a common difference nor a common ratio.

3. 64, 32, 16, 8, ...

This sequence has a common ratio (× ½). So it is geometric.