The first working out is correct, z = 3
 
        
             
        
        
        
Step-by-step explanation:
See the attached for the proof
 
        
             
        
        
        
Answer:
1. Distributive
Step-by-step explanation:
This is because you multiply the number outside the parentheses into the numbers inside the parentheses.
Hope it helped. 
 
        
                    
             
        
        
        
Answer:
ksb said did bud did did it did did gc victory in suf did did zudbxudng jc fn facing did fjgduf bdyrut during their fyrhfb hi f f7djdufj fhdf. Is A
 
        
             
        
        
        
We can tell this is an isosceles triangle due to the sticks meaning the base angles are equal so the measurement of ACB would be the same as ABC so it would measure x