Answer:
b
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
option A:  120°
Step-by-step explanation:

 
        
             
        
        
        
Answer:
The answer is -1.
Step-by-step explanation:
You have to apply gradient formula :

So you will have to substitute the coordinates into the equation. Let (x1,y1) be (-3,4) and (x2,y2) be (5,-4) :



 
        
             
        
        
        
Answer:  
x=5  
Step-by-step explanation:
x is the length of the line segment from the center to the boderline of circle. So x=5