Answer:
B. 20.41
Step-by-step explanation:
I hope this helps! pls brainliest:D
Answer:
4 + 12 + 36 + ...
Step-by-step explanation:
4, 12, 36, ... is a geometric sequence, it has a common ratio of 
When we add the terms of a geometric sequence we get a geometric series.
4+12+36+ ... is a geometric series, it has a common ratio of 
4 + 12 + 20 + ... is not a geometric series because it has no common ratio

The second choice is correct
Answer:
Step-by-step explanation:
Answer:
i think 9
Step-by-step explanation:
45/5 is 9 so hope thus helps