Answer:
i think its the last one 
Step-by-step explanation:
as 15 - 3 is 12 and then the 7 
hope this helps 
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Answer:
Step-by-step explanation:
1 will be B, dont know bout 2
 
        
             
        
        
        
Answer:

Step-by-step explanation:

 
        
             
        
        
        
K is 23. 
As for the equation, it is 
29=k+6 
To solve, subtract 6 from both sides.
        
                    
             
        
        
        
Answer:
h = 6 cm
Step-by-step explanation:
Atriangle = b×h/2
18cm² = 6cm×h/2
36cm² = 6cm×h
h = 36cm²/6cm
h = 6 cm