Answer:
90
Step-by-step explanation:
The formula for right triangular prisms is simple; 1/2 × a × b × c. So simply plug in your numbers (doesn't matter the order you plug in). 
1/2 × 12 × 5 × 3 = 90
 
        
                    
             
        
        
        
Answer:
30°
Step-by-step explanation:
 
        
                    
             
        
        
        
What review words exactly?
        
             
        
        
        
Answer:
the minus can get inside the brackets
Step-by-step explanation:
 -2(n-3)= 2(3-n)= 6-2n