Step 2! The reason for that is the student didnt multiplied (15-2z) with -2. But she should have!
        
             
        
        
        
The answer is 4.953 I don't understand how you would use a table sorry.
        
                    
             
        
        
        
Answer:
7.71 is the answer hope you get it
 
        
             
        
        
        
Answer:
Triangle has three sides so u can dismiss 2nd easily
scalene triangle has 2 equal sides 
so, 1st is the correct answer
 
        
                    
             
        
        
        
Answer:
542.5
Step-by-step explanation: tRUST ME ON THIS