The answer would be C) because there are 11 possibilities of who can line up first, and after the first person, 10 possibilities, then 9, and so on. So you would need to multiply 11x10x9x8x...x1.
        
             
        
        
        
Step-by-step explanation:
3 and 4. 
because the sum of the smaller two sides of a triangle have to be less than or equal to the 3rd larger side.
 
        
                    
             
        
        
        
Answer:
The correct answer is B. The rate of change is about 3 feet per minute
I hope this helped!
 
        
             
        
        
        
Angle B= 45 degrees
Angle A = 45 degrees
A and B are congruent since they are alternate exterior angles
5x-15 = 2x +21
5x = 2x +36
3x=36
X=12
B)
2x12+21 = 45
A)
5x12-15 =45