Answer:
Step-by-step explanation:
The first step to solving this problem is verifying if this sequence is an arithmetic sequence or a geometric sequence.
This sequence is arithmetic if:
We have that:
This is not an arithmetic sequence.
This sequence is geometric if:
This is a geometric sequence, in which:
The first term is 40, so
The common ratio is , so
.
We have that:
The 10th term is . So:
Simplifying by 4, we have:
