well, a negative plus a negative always will be a negative
example:
-1+-1=-2
 
        
                    
             
        
        
        
Answer:
What is the question?
Step-by-step explanation:
 
        
             
        
        
        
Answer:
x = 47°
Step-by-step explanation:
This is an exterior angle property, one of the properties in a triangle. The exterior angle theorem states that if a triangle's side gets an extension, then the resultant exterior angle would be equal to the sum of the two opposite interior angles of the triangle.
 
        
                    
             
        
        
        
Answer:
67
Step-by-step explanation:
I don car e dry because I debt 
 
        
             
        
        
        
Answer:
At approximately x = 0.08 and x = 3.92. 
Step-by-step explanation:
The height of the ball is modeled by the function: 

Where f(x) is the height after x seconds. 
We want to determine the time(s) when the ball is 10 feet in the air. 
Therefore, we will set the function equal to 10 and solve for x: 

Subtracting 10 from both sides: 

For simplicity, divide both sides by -1: 

We will use the quadratic formula. In this case a = 16, b = -64, and c = 5. Therefore: 

Substitute: 

Evaluate: 

Simplify the square root: 

Therefore: 

Simplify: 

Approximate:
 
Therefore, the ball will reach a height of 10 feet at approximately x = 0.08 and x = 3.92.