Answer:

Step-by-step explanation:




3

Separate the solutions:


Answer:
So, Plane ABC and plane BCE _may_ be the same plane.
Step-by-step explanation:
This happens when E is on Plane ABC (or you could say, A is on Plane BCE). If not, then they are two different planes.
Answer:
x = -4 and x = -14
Step-by-step explanation:
Our equation is (x + 9)² = 25
Applying the square root property we would need to take the square root of both sides: 
This give us x + 9 = ±5
Here we have two equations since taking the square root gives us a positive and negative value
Our first equation is x + 9 = 5, and to isolate the variable we would need to subtract 9 from both sides, giving us x = -4
Our second equation is x + 9 = -5, and to isolate the variable we would need to subtract 9 from both sides, giving us x = -14
Answer:
(13,9) I think
Step-by-step explanation:
I hope this helps and I hope I can get Brainliest! =)