Suppose there are 30 people in a jury pool and the final jury will consist of 12 of these people. Suppose that among the 30, there are 17 whites and 13 non-whites. And suppose that the jury ends up being all white. What is the probability of this happening, if all possible 12-person juries has been equally likely?

Step-by-step explanation:

Total number of people, n = 30

number of white people = 17

number of non white people = 13

number of selected person which are white = 12

So, the number of ways to select the 12 white people out of 17 white people

=

the number of ways to select 12 white people out of total 30 people

So, the probability to select 12 white people out of 30 people is

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.