Let the boy be B and the girl be G
there are six possible outcomes 
BGG, GBB, GBG, BGB, BBB, and GGG
therefore the probability of getting one boy and two girls is 

also the probability of getting 3 girls is 
 
 
        
        
        
Answer: 80 miles
Step-by-step explanation:
 
        
                    
             
        
        
        
Step-by-step explanation:
 Given : 
 1- cosA = 1/2 
 or, CosA = 1 -1/2 
 Therefore ; CosA = 1/2 = b/h 
 
According to the Pythagoras theorem, 
 
P = root under h^2 - b^2 
 = root under (2)^2 - (1)^2 
 = root under 4 -1 
 = root 3 
Again, 
 SinA = P/h 
 = root 3 / 2
 
        
             
        
        
        
Answer:
∠6 = ∠8
∠2 = ∠6
Step-by-step explanation:
Lines 'p' and 'q' are the parallel lines and line 'l' is a transversal line intersecting these lines at two distinct points.
By the property of alternate interior angles,
∠3 = ∠5
By the property of vertically opposite angles,
∠6 = ∠8 
By the property of corresponding angles,
∠2 = ∠6 
 
        
             
        
        
        
graph of a linear equation is a line, two linear equations has no solution mean two lines has no intersect/common point, those two lines must be parallel