A 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 130. What is the theoretical
probability of 5 students from your school being selected as contestants out of 10 possible contestant spots?

What is the theoretical probability of 5 students from your school being selected as contestants out of 10 possible contestant spots?

17.9%

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0