Answer:
20
Step-by-step explanation:
6 + 2 = 8
8 + 3 = 11
11 + 4 =15
15 + 5 =20
 
        
                    
             
        
        
        
According to my examination I have confirmed that I do NOT repeat do NOT know this.
        
             
        
        
        
900/18=50
On average, 50 students rode each bus
Hope this helps!
        
             
        
        
        
Answer:
Step-by-step explanation:
(a - b)² = a² + 2ab + b²
Area of square frame =side²
                                    = (2b - 1)²
                                    = (2b)² - 2*2b * 1 + 1²
                                    = 4b² - 4b + 1
 
        
             
        
        
        
It’s a pentagon (5 sides) . (n-2) x 180°. if you put it into the formula and do the reverse. 540 / 180 = 3 
, 3+2 = 5