You need help with the whole thing?
        
             
        
        
        
Answer:
A. 15
Step-by-step explanation:
Ooh, look! This triangle is a Pythagorean triple! Without even needing to use a formula, I can tell that you are correct and the answer is A. 15.
It's based off of a 3-4-5 right triangle, because 9-12-15 simplifies to that if you divide every term by 3. It's basically just a bigger version of a 3-4-5 triangle! Isn't math cool:)
 
        
                    
             
        
        
        
A heptagon is a polygon.
It has 7 sides 
HOPE MINE IS THE BRAINLIEST 
 
        
                    
             
        
        
        
Answer:
20+h = 46
Step-by-step explanation:
it doesn't ask to solve it so that's the answer 
 
        
                    
             
        
        
        
Its 20. |-2|+4-(-2)×(7). This simplifies to 2+4+(2×7)