Answer: x=34
Step-by-step explanation:
straight lines = 180
triangles = 180
180-145 = 35
111+35=146
180-146=34
 
        
             
        
        
        
Answer: The answer is 4 and 32.
Step-by-step explanation: Let "A", "B" and "C" represents the set of students who were taking Arabic, Bulgarian and Chinese respectively.
The, according to the given information, we have

Let 'p' represents the number of students who take all the three languages, then

Also,

From here, we get after subtracting equation(c) from (b) that
 
 
Therefore,
 and from equation (a), we find
 and from equation (a), we find

Thus, 
 and
 and

Thus, the number of students who take all the three languages is 4 and the number of students who take none of the languages is 100-68 = 32.
 
 
        
             
        
        
        
Answer:
<h2>The top one</h2>
Step-by-step explanation:
<h2>Hope it helps</h2>
 
        
             
        
        
        
Answer:
P(A) = 0.5
Step-by-step explanation:
Look from the tree root (left) and find A.   
When you reach the first branch that shows A, the probability is on it's left, so
P(A) = 0.5
 
        
             
        
        
        
Answer:
x=4
Step-by-step explanation: