-1/6 Is the answer for this!!
        
             
        
        
        
Answer:

Step-by-step explanation:
We are given the following in the question:
x:                −4       −3       −2      −1       0
P(X=x):        0.2      0.3      0.1     0.2     0.2
We have to evaluate

Since it is a discrete probability distribution as

We can evaluate the probability as:

Thus, 0.4 is the require probability.
 
        
             
        
        
        
Answer:
A rate of change is a rate that describes how one quantity changes in relation to another quantity.
 
        
             
        
        
        
Answer:
No it can'tright angle triangle
Step-by-step explanation:
 2, 2, √4 can't make a right triangle
By Pythagoras theorem the square of two sides equal to the third side of the triangle.
2^2+2^2=(√4)^2
4+4=4
8 is not equal to 4 so it not make right angle triangle.