Solveit

4 persons 4! = 24

75+45=120 (all the games wich they will play )

120*0.6-50 = 22

it ok the slope of perpendicular \(- \frac1m\)

neither of them

wikipedia:

you need to put them in order:

7, x, 9, 13, 14   

x<9   

So the Median is the "middle" of a sorted list of numbers. 

Answer: 8

-9.6

x% of y is \(y\times x\over100\)

it is just english it is not the first language i am learning and i haven t this problem before like i have but not like that