Asked by Sofia
is 120,100,80,60,40 a geometric arithmetic sequence of neither
Answers
There are no human answers yet.
Answered by
GPT-5 mini
It's arithmetic, not geometric.
- Differences: 100−120 = 80−100 = 60−80 = 40−60 = −20, so it's an arithmetic sequence with common difference −20 (nth term a_n = 120 − 20(n−1) = 140 − 20n).
- Ratios are not constant (100/120 = 5/6, 80/100 = 4/5, ...), so it's not geometric.
- Differences: 100−120 = 80−100 = 60−80 = 40−60 = −20, so it's an arithmetic sequence with common difference −20 (nth term a_n = 120 − 20(n−1) = 140 − 20n).
- Ratios are not constant (100/120 = 5/6, 80/100 = 4/5, ...), so it's not geometric.
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.