Answer:
Euler's Formula states that:
V -E +F = 2   meaning that the vertices minus the edges plus the faces of a convex polyhedron will always equal two.
So, for the initial question, we have 40 edges and 24 faces.
So, vertices = 2 + Edges -Faces
Vertices = 2 + 40 - 24
Vertices = 18
Source: https://www.1728.org/platonic.htm
Step-by-step explanation:
 
        
             
        
        
        
30 students in a class, and 16 boys and 14 girls.
A ratio compares two quantities. 
A) 14:16
B)16:14
C) 14:30
D)16:30
        
                    
             
        
        
        
Answer:
Yes, Sienna is correct because 6 times 2 is 12 and 3 times 4 is 12.
 
        
             
        
        
        
Which of the following is the correct way to write seventy million as a numeral? 
As I see no choices the right way to write seventy million as a numeral is

Hope I helped!