Which of the following best represents the circumference of a circle whose radius is 6.75 cm? ​A​13.5​cm
​B​6.75 cm
​C​27 cm
​D​42.39 cm

d

Step-by-step explanation:

1

 The  correct option is  A

2

 The  correct option is  C

3

 The  correct option is  C

Step-by-step explanation:

From the question we are told that

   The proportion of the winning bid from a regular bidder is  

   The proportion of the winning bid from a occasional bidders is  

     The proportion of the winning bid from a first- time bidders is  

    The proportion of  satisfactory jobs done by a regular bidders is

The proportion of  satisfactory jobs done by a occasional bidders is    

The proportion of  satisfactory jobs done by a first- time bidders is  

Generally the probability that a job will be done by a first-time bidder and be satisfactory is mathematically represented as

=>        

=>      

Generally the probability that a job will be satisfactory is mathematically represented as

=>    

Generally given that a job is satisfactory, what is the probability that it was done by a regular bidder is mathematically evaluated as