Answer:
-1+3i
Step-by-step explanation:

Sqr root of 25 and 36 are 5 and 6 respectively
Sqr root of -25 and -4 are 5i and 2i respectively
Combine like with like
5-6=-1
5i-2i=3i
-1+3i
Answer:
Step-by-step explanation:
27.068
28.08
28.15
29.94
The answer to the question is 20
Answer:
2:30
Step-by-step explanation:
A half hour is 30 minutes.
Answer: The second one
Step-by-step explanation: