Step-by-step explanation:
1/2 × (p+9) is the algebraic expression.
 
        
                    
             
        
        
        
Answer:
the perimeter is the total length of that plane figure 
 
        
             
        
        
        
I think  you can put bench mark place valie round tenth thousnadth
        
             
        
        
        
Answer:
86
Step-by-step explanation:
182 – (4 + 92)
I have big brain
 
        
             
        
        
        
2-10 = -8       I'm not sure what the 5,6,7,8,9,10 means if you tell me i might be able to help you