The value of x is 1/5
Step-by-step explanation:
In a probability distribution, probability should be between 0  and 1. The probabilities add up to one.
Given probabilities are:

The sum of these probabilities will be equal to 1. 
So,
To find x,

The value of x is 1/5
Keywords: Probability, Distribution
Learn more about probability at:
#LearnwithBrainly
 
        
                    
             
        
        
        
Answer:
Positive
Step-by-step explanation:
Since there are two x-intercepts, -2 and 2, there is a positive discriminant. If the parabola was below the x axis and opened downwards, the discriminant would be negative.
 
        
                    
             
        
        
        
Answer: Yes
Step-by-step explanation:
 
        
             
        
        
        
Answer:
C. No, because one x-value corresponds to two different y-values
Step-by-step explanation:
An x-value cannot have two y-values. Hope this helps!
 
        
                    
             
        
        
        
Answer:
1200 students at the school
Step-by-step explanation:
Let x be the total number of students at the school
50% ride the bus
600 students ride the bus
x*50% = 600
Changing to decimal form
.50x = 600
Divide each side by .5
.50x/.5 = 600/.5
x =1200
1200 students at the school