A box is filled with 7 green cards, 2 brown cards, and 5 blue cards. A card is chosen at random from the box. What is the probability that it is a green or a blue card?
Write your answer as a fraction in simplest form.

12/14

Step-by-step explanation:

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.

i have no clue what you just said. write a question in english?