The graph shows a probability distribution p(x)p(x) for a discrete random variable x.

enter the probabilities.
p(20≤x< 40)=p(20≤x< 40)=

p(x< 10)=p(x< 10)=

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

a

step-by-step explanation:

a

yes. we do proportions in probabilities.