Answer:
Hi there!
The answer to this question is (B) 4
Step-by-step explanation:
Using the order of operations, you first solve what it is inside of the parenthesis, which in this case is (4-2), that equals to 2.
then you need to figure out what multiply by 2 gets 8. Out of all the answer choice (B) fits perfectly.
 
        
             
        
        
        
So you question is most likely about a triangle DEF with the 3 angles being named D, E, F. The triangle would look something like the image attached below.
If that is what is being asked then i need more info to answer but 
By Definition it would be 180 degrees. 
 
        
        
        
Answer:
D
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Natral whole rational irrational