Atrain can either be early, on time or late. the probability that the train is early is 0.2 the probability that the train is on time is 0.5 work out the probability that the train is late.

4038

step-by-step explanation:

pleaze mark brainliest!

answer is : muchas/tipicas

have a nice day!

~recklesschicken

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