A bowl contains 5 red marbles and 4 blue marbles. If you don't replace marbles after choosing them, what are the chances of picking 3 red marbles in a row?

3+x

step-by-step explanation:

  or  

sin y = 7/q

7 is the opposite side length, q is the hypotenuse

tan y = 7/r

7 is the opposite side length, r is the adjacent side length

using sohcahtoa ^^^^

cos y = adjacent/hypotenuse

cos y = r/q

you are having disney spells!