Find the mean (average)
the data set below?
2 18 28 5
4' 5'10'20

11.5

Step-by-step explanation:

You add up all the values which is 92 and divide by 8 since there are 8 values. You get 11.5

the workers who do no drive has no reasonable reason to buy gasoline due to they don't have anything to use it for

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.