Answer:
0.6804
Step-by-step explanation:
Given that Margie is practicing for an upcoming tennis tournament. Her first serve is good 20 out of 30 times on average. 
Since each trial is independent and there are two outcomes, X no of good serves is binomial with n=6 and p =2/3
Required probability
= Prob that atleast four of 6 times good serve
=
=
Formula used:
P(X=r) =
 
        
                    
             
        
        
        
You can take out 2x^3 from both terms making it 
2x^3 (15+8x^2) 
Answer is B
        
             
        
        
        
Yes a cube has eight vertices
        
             
        
        
        
Answer: graph 3 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
<h2>24</h2>
Step-by-step explanation:
Given the following logarithmic expressions  , we are to find the value of
, we are to find the value of 
 Substituting x = a³, y = a⁷ and z = a⁻² into the log function
Substituting x = a³, y = a⁷ and z = a⁻² into the log function  we will have;
 we will have;

Hence, the value of the logarithm expression is 24