Answer:
-1
Step-by-step explanation:
There are things called domain and range.
Domain is all the x values and range is all the y values.
Since in your picture the parabola only seems to be touching -1, that is your domain.
Answer:

Step-by-step explanation:
From the question we are told that
Charge 
Force 
Generally the equation for electric field strength is mathematically given as


Therefore

Answer:
AE = 19 and <EDC = 59
Step-by-step explanation:
i am almost positive that those are both right
Answer:
112.5 which is 113
Step-by-step explanation:
150 divided by 60= 2.5
2.5 times 45=112.5