Answer:
z= 69
Step-by-step explanation:
79+122+90+z=360 angle sum property
360-291=69
so z=69 degree
 
        
                    
             
        
        
        
Answer:
I think it can be 12 and -6
Step-by-step explanation:
The sum has to be equal to 6
12+ -6= 6
Also, the two integers have opposite signs as asked in the question 
 
        
             
        
        
        
Answer:
OB) The mode does not change