Answer: 
4. Vertical angles theorem 
6. 3x + 4 =49
Step-by-step explanation:
 
        
             
        
        
        
The answer of this question is b
        
                    
             
        
        
        
if the circumference of the shield is 100.48inches, nits radius is 16 inches and the area of the front of the shield is about 803.84 square inches.
proof
circumference = 2x r x Pi implies r =circumference / 2Pi=100.48/2x3.14=16
area = Pi x r²=3.14 x 16²=804.84
 
        
             
        
        
        
Answer:
When in public, wear a mask 
Just a teeny, weeny task
It helps keep is safe and sound
Health and care, all around
On your mouth, and on your nose
Good to cover both of those
Step-by-step explanation:
It's called the mask song you can ask Google assistant to sing it for you:)
 
        
             
        
        
        
Answer:
7 people, 7 walls, 48 minutes
  
Each person paints 1 wall in 48 minutes
  
20 persons, 20 walls
Each person can paint 1 wall in 48 minutes so it will  take 48 minutes.