The graph to the right is the uniform probability density function for a friend who is x minutes late.
(a) Find the probability that the friend is between 25 and 30 minutes late.
(b) It is 10 A. M. There is a 10% probability the friend will arrive within how many minutes?

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

d. you cannot tell because there are no values shown.