Answer:
The answer to your question is letter B.
Step-by-step explanation:
The correct answer is letter B because both Copper and Iron as reactants have an oxidation number of zero and when they have reacted their oxidation numbers would be different from those.
A redox reaction is a reaction that involves a transfer of electrons from one atom to another and the oxidation numbers of the reactants are different from the oxidation numbers from the products. 
 
        
             
        
        
        
Answer:
5/8
Step-by-step explanation:
SUM OF RATIOS = 5 + 3 = 8
fraction of blue sweet = blue sweet ratio / sum of ratios = 5/8
 
        
             
        
        
        
Answer:
x = 30.0462
Step-by-step explanation:
- Divide each side by 3 to cancel out the 3 next to x. It should now look like this: x = 30.0462
I hope this helps!
 
        
                    
             
        
        
        
330/11=30 
300 like Drake
30 like Shawn Mendez
        
                    
             
        
        
        
Answer:
Let x = the third side
  
In a triangle, the sum of any 2 sides must be larger than the third side.
I believe this is called the triangle inequality theorem.
  
We can construct 3 inequalities to obtain the range of values for the third side.
  
   (Inequality #1)   12 + 4 > x
                                   16 > x
  
   (Inequality#2)    12 + x > 4
                                     x > -8   (we can discard this ... we know all sides will be positive)
  
   (Inequality #3)   4 + x > 12
                                    x > 8
  
So when we combine these together,  
  
    8 < x < 16
  
X (the third side) must be a number between 8 and 16. but not including 8 and 16