Answer:
2 bc cos A
Step-by-step explanation:
Cosine rule 
 
        
             
        
        
        
Answer:
1c
  
1d
  
Step-by-step explanation:
From the question we are told that 
    The  probability of telesales representative making a sale on a customer call is  
      The mean is  
Generally the distribution of sales call  made by a  telesales representative follows a binomial distribution  
 i.e  
           
and the probability distribution function for binomial  distribution is  
        
Here C stands for combination hence we are going to be making use of the combination function in our calculators  
Generally the mean is mathematically represented as 
      
=>  
=>  
Generally the least number of calls that need to be made by a representative for the  probability of at least 1 sale to exceed 0.95 is mathematically represented as 
       
=>    
=>    ![P( X \ge 1) = 1 - [ ^{n}C_0 *  (0.15 )^0 *  (1- 0.15)^{n-0}] > 0.95](https://tex.z-dn.net/?f=P%28%20X%20%5Cge%201%29%20%3D%201%20-%20%5B%20%5E%7Bn%7DC_0%20%2A%20%20%280.15%20%29%5E0%20%2A%20%20%281-%200.15%29%5E%7Bn-0%7D%5D%20%3E%200.95)
=>    ![1 - [1  *  1*  (0.85)^{n}] > 0.95](https://tex.z-dn.net/?f=%201%20-%20%5B1%20%20%2A%20%201%2A%20%20%280.85%29%5E%7Bn%7D%5D%20%3E%200.95)
=>    ![[(0.85)^{n}] > 0.05](https://tex.z-dn.net/?f=%20%20%5B%280.85%29%5E%7Bn%7D%5D%20%3E%200.05)
taking natural  log of both sides 

=>  
 
        
             
        
        
        
Hey there! 
2.7 * 10^4 + 120
10^4
= 10 * 10 * 10 * 10 
= 100 * 100
= 10,000
2.7 * 10,000 + 120
= 27,000 + 120
= 27,120
Therefore, your answer is. [10,000 * 2.712] because 10,000 * 2.712 is approximately 27,120 
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
 
        
             
        
        
        
Answer:
These are the answers:
A) The mean, or average, is a measure of center.
D) Measures of variability describe how the values in a data set vary.
E) Measures of center describe all values in a data set with a single number.