Answer:
Step-by-step explanation:
4 and 6
 
        
             
        
        
        
Answer:
   5
Step-by-step explanation:
The number of elements in set A is 5.
 
        
             
        
        
        
The formula of the length of the segment AB:

We have:

Substitute:

Answer: 
B) 10.
 
        
        
        
Answer:
180 mm
Step-by-step explanation:
height : cases
105 : 7
constant of proportionality = 105/7
height of 12 cases = 12 x 105/7 = 180 mm
 
        
             
        
        
        
As I understand from the given above, each box when empty weighs 5-2 kg or 3 kg. To determine the total weight of Michael's boxes when empty, we just have to multiply 3 kg by 5. This gives us an answer of 15 kg. Thus, the total mass of Michael's boxes is 15 kg.