Answer:
one second
Step-by-step explanation:
 
        
             
        
        
        
Answer:

Step-by-step explanation:
x and 52 are supplementary, so they add up to 180°

 
        
                    
             
        
        
        
Answer:
CB= 4
Step-by-step explanation:
the triangles are in AA similarity.
AB/AD = BC/DE
4/12 = x/12
CROSS MULTIPLY;
x = 48/12
x = 4
 
        
             
        
        
        
Answer:
9
Step-by-step explanation:
Subtract 1 2 12 12 from both sides of the equation + 1 2 = 2 1 + 1 2 − 1 2 = 2 1 − 1 2 2 Simplify Solution = 9