Which explains why the sequence 216, 12, 2/3 is arithmetic or geometric.

A. The sequence is geometric because it decreases by a factor of 6.

B. The sequence is arithmetic because it decreases by a factor of 6.

*C. The sequence is geometric because it decreases by a factor of 1/18.

D. The sequence is arithmetic because it decreases by a factor of 1/18.

Question

Mathematics

Leah Martinez

Today, 09:45

Which explains why the sequence 216, 12, 2/3 is arithmetic or geometric.

A. The sequence is geometric because it decreases by a factor of 6.

B. The sequence is arithmetic because it decreases by a factor of 6.

*C. The sequence is geometric because it decreases by a factor of 1/18.

D. The sequence is arithmetic because it decreases by a factor of 1/18.

+3

Answers (1)

Know the Answer?

Dayana Goodman · Answer 1

C, because every time you multiply the preceding number by 1/18, you get the next number in the sequence. It's not D, because an arithmetic sequence would be 216-1/18 (a difference of 1/18) rather than it decreasing by a factor.