Answer:
-8
Step-by-step explanation:
5(x+12)=  20
5x+60= 20  
5x= -40
x= -8
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Let 
So 

Let 
We are going to find 
So we are evaluating 
First step find f(-2) 
Second step find f'(-2)
Third step plug in those values and apply PEMDAS!


So 

 
        
             
        
        
        
Answer:
(a+b)/c
Step-by-step explanation:
a/c+b/c
since they have the same denominator you can add the numerator together
(a+b)/c
 
        
             
        
        
        
Answer:
80
Step-by-step explanation:
 
        
             
        
        
        
Answer:
The correct option is;
r = √(x² + y²)
θ = tan⁻¹(y/x)
Step-by-step explanation:
The rectangular coordinate of a complex number on the complex plane is given as (x, y)
Given that the complex number is represented by a point on the plane, we have;
The distance, r, of the point from the origin, (0, 0) is r = √(x² + y²)
The direction, θ, by which we rotate to be in line with the point on the complex number is given by tan⁻¹(y/x)