Jacob has a bag of hair bands. In the bag there are 10 red hair bands, 9 green hair bands and 5 orange hair hands. He takes one hair band out, records its color hair band and puts it back in the bag. He then draws another hair band. What is the probability of taking out a red hair band followed by the green hair band?

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.

for future students the answer is b

hope i

-lavira: )