Umm can you be more specific on your question so I can help you need to explain what you need help on
        
             
        
        
        
First: 7cm, 7cm, 11cm
second: 19cm, 3cm, 3cm
        
             
        
        
        
Answer:
A  Exactly 1 solution
Step-by-step explanation:
if we express both equations as y = mx+b
we will see that both equations have different slopes (i.e "m" values are different). 
By definition, 2 straight lines of different slopes will intersect at only one location (i.e there is only one solution)
 
        
                    
             
        
        
        
Answer:
first one is 32
the second one is 53
Step-by-step explanation: