Group of 30 students from your school is part of the audience for a TV game show the total number of people in the audience is 150 what is the theoretical probability of four students from your school being selected as contestants out of 8 possible contestants spots?

Step-by-step explanation:

The number of students participated  = 30

Total audience = 150

By probability , to find the solution =  

where n(E) is the number of favorable outcomes,

n(S) is the number of total outcomes.

 n(S) is the number of ways any 8 students can by picked from the audience=  

 n(E) is the probability of picking four students from our school and five students from another school.

n(E) = =

 = =

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2