Answer:
5. 6+6i
6. 
Step-by-step explanation:
well, u just need to calculate
Answer:
yes it's a solution. I think. I don't really know this
Answer:
This system has no solution
Step-by-step explanation:
If this is the real question,it has no solution
Answer:
The formula is simply this: C = πd. In this equation, "C" represents the circumference of the circle, and "d" represents its diameter. That is to say, you can find the circumference of a circle just by multiplying the diameter by pi.