Answer: option d.
Step-by-step explanation:
 You have the following formul given in the problem:
 
 You know that:
 The number of  customers serviced in an hour by the technical support representative is 6 costumbers, therefore:
 
 As the problem asked for the probability that  a costumber will be on hold less than 30 minutes, we know that:
 
 Substitute the values above into the formula.
 Then, you obtain:
  or 95%
 or 95%
 
        
             
        
        
        
Yes it’s 15, Thats cool man
        
             
        
        
        
Part A
 The first thing we must do in this case is to hide the slopes of each line. 
 line m:
 m = (- 4-3) / (0 - (- 4))
 m = -7 / 4
 Line n:
 n = (- 2-2) / (3-1)
 n = -4 / 2
 n = -2
 Answer:
 Lines m and n are not parallel because their slopes are different.
 Part B:
 We look for the slope of the K line:
 k = (1 - (- 3)) / (4 - (- 3))
 k = 4/7
 We observe that it is true that:
 k = -1 / m
 Answer: 
 The lines are perpendicular.
        
                    
             
        
        
        
Answer:
8.5
Step-by-step explanation:
Given the expression 12.75/1.5. The technique in solving the division expression is as shown
First we can write the decimals as fraction as shown;
12.75 = 1275/100
1.5 = 15/10
12.75/1.5 = (1275/100)÷(15/10)
12.75/1.5 = 1275/100×10/15
12.75/1.5 = 1275/10 × 1/15
12.75/1.5 = 1275/150
12.75/1.5 = 8.5
Hence the result of the division is 8.5