The quadratic formula is -b + or - the square root of b squared - 4 times the a value and c value over 2a. So the roots would be -1.354249 and -6.645751. I believe these are the roots. 
        
             
        
        
        
Answer:
12
Step-by-step explanation:
Mean is the average of all the numbers. Add up all the numbers then divide by how many you have.
 
        
                    
             
        
        
        
Answer:
c
Step-by-step explanation:
 
        
             
        
        
        
Gas is 2.45 per gallon.  So if we pay $12 we get 12÷2.45 gallons:
12 ÷ 2.45 ≈ 4.90 gallons.
You get roughly 4.90 gallons.
        
                    
             
        
        
        
H/5 = tan(60°)
h = 5tan(60°)
h = 5rt(3)
~F