Aresearcher surveyed five randomly selected employees from each of four different companies about their daily commutes to work. the table shows the commute times for the surveyed employees. amount of time of company 1: 24, 26, 28, 23, 21 amount of time for company 2: 6, 32, 9, 31, 21 amount of time for company 3: 15, 15, 15, 15, 15 amount of time for company 4: 13, 10, 45, 12, 15   based on the data, which company most likely has the longest average commute time per employee? ( me, i don't understand what they're trying to say)

Company 1 most likely has the longest average commute time per employee.  

Step-by-step explanation:

A researcher surveyed five randomly selected employees from each of four different companies about their daily commutes to work.

We have to find which company most likely has the longest average commute time per employee.

So we will find the mean of the given each company's data

Mean = Sum of total number /total number of values

For Company 1 :   = 24.4

For company 2 : = 19.8          

For company 3 :   = 15                      

For company 4 : = 19    

As we can see Company 1 has largest mean.

So Company 1 most likely has the longest average commute time per employee.  

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.