Answer:
A the sybol is facing the wrong way so it means greater than or equal not less than or equal to
B the gross value is accuratly represented and the symbol is facing the correct way
I think
 
        
             
        
        
        
Answer:
x=8
Step-by-step explanation:
add 4 to both sides
divide 40 by 5
then you are left with x=8
 
        
                    
             
        
        
        
Answer:
Option A ( radius is twice the daimeter )
Step-by-step explanation:
The relationship between radius and daimeter is given as
        Radius² = Daimeter    ⇒    r² =  d
And cricumference can be calculated with radius 
  As circumference is    2πr
 
        
                    
             
        
        
        
Answer:
V = 82,406.16 cm³
Step-by-step explanation:
Volume of a sphere 
V = 4πr³/3 
V = 4•3.14•27³/3
V = 247,218.48/3
V = 82,406.16 cm³