Answer: Our required probability is 0.39.
Step-by-step explanation:
Since we have given that
X be the exponentially distributed with mean life = 6 years
So, E[x]=6

So, our cumulative distribution function would be 

We need to find the probability that the CPU fails within 3 years.

Hence, our required probability is 0.39. 
 
        
             
        
        
        
y+2 = 3x
subtract 2 from each side
y = 3x-2
 
        
                    
             
        
        
        
Answer: C
The formula for tangent is tan(x)= opposite/ adjacent so plugging it in would be tan(x)=9/4
        
                    
             
        
        
        
Answer:
2
Step-by-step explanation: