There are 7 students in a dess 5 boys and 2 girls. the teacher picks a group of 4 at random, what is the probability that everyone in the group is a boy?

been looking for the answer havent been able to find it   but good luck with it

answer: h

step-by-step explanation:

the answer is b

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.