Answer:
49.451 this would be the answer 
 
        
                    
             
        
        
        
Answer:
It’s a 1/2 chance it’s heads.
Step-by-step explanation:
Because there’s two sides
 
        
                    
             
        
        
        
Answer:
24.269
Step-by-step explanation:
 
        
             
        
        
        
Answer:
the center is (-4,7) and the radius is 3
Step-by-step explanation:
The center of a circle can be found using the equation 
 and is (h,k) from it. Notice h and k are the opposite value as in the equation.  
First write the equation in this form.  
  
Complete the square with each variable to find what numbers should go in place of the question marks.  
  
  
Add 16 and 49 to both sides of the equation.  
  
So the center is (-4,7) and the radius is 3.
 
        
             
        
        
        
Answer: Karen has 20, Trey has 15, Dante has 40
Step-by-step explanation:
Karen=x+5    Trey=x     Dante=2x+10
             x+x+5+2x+10=75
                  4x+15=75
                    4x=60
                      x=15