Question

Identify the sequence as arithmetic, geometric, or neither. Explain your answer.

1.6, 0.8, 0.4, 0.2, . . .

Answer 1

Geometric. You're dividing by 2 each time and arithmetic deals with addition or subtraction, not multiplication and division. (:

Answer 2

seems like its decreasing by half each time.

\[0.8 \div 1.6 = \frac{ 1 }{ 2 }\]

\[0.4 \div 0.8 = \frac{ 1 }{ 2 }\]

so it would be a geometric... & you are multiplying by 1/2 each time.

Answer 3

Great, thank you both so much!!