True but idk fr just use google
        
             
        
        
        
Answer:
The answer to your question is letter A. 
Step-by-step explanation:
Cosine is the trigonometric function that the adjacent side and the hypotenuse.
Formula
                          cos x = 
For x:
Adjacent side = 5
Hypotenuse = 13
Substitution
                        cos x = 
 
        
             
        
        
        
The answer to your problem is 189,728
        
                    
             
        
        
        
Answer:
Mean of the binomial distribution  μ= 6
Variance of the binomial distribution  λ² = 4.2
Step-by-step explanation:
 <u>Explanation:-</u>
The probability a Gallup poll showed that 30% of Americans are satisfied with the way things are going in the United States. 
p = 30% = 0.3
q =1-p = 1- 0.3 =0.7
a sample of 20 Americans is selected as part of a study of the state of the nation  
size of the sample 'n' =20
we will use binomial distribution
<u>mean</u>:-
Mean of Americans who are satisfied with the way things are going in the United States                               (μ) = np
                                                      μ= 20 X 0.3
                                                     μ= 6
<u>Variance</u>:-
Variance of Americans who are satisfied with the way things are going in the United States                              λ² = n p q = 20 X(0.3)(0.7)
                                                          λ² = 4.2
 
        
             
        
        
        
Answer: 37.50
Step-by-step explanation: If he works 5 hours A DAY and he earns $7.50 PER HOURS, you just need to multiple 
7.50(5)= 37.50