Answer:
I think the volume is 99
Step-by-step explanation: I am not sure. PLs report my answer if wrong!
Answer: First option is correct.
Step-by-step explanation:
Since we have given that
4.05, 1.35, 0.45, 0.15, ...
Since it is a geometric sequence.
So, here, a = 4.05
r = 
So, we know the formula for nth term in geometric sequence.

Hence, First option is correct.
Answer:A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x² = −1. Because no real number satisfies this equation, i is called an imaginary number.
Step-by-step explanation:
The length is 3
The name is AC