i'm sorry i don't know
step-by-step explanation:
open side up . . 1/50 . . 2%
closed side up . . 5/50 . . 10%
landed on side . . 44/50 . . 88%
this would be 35. 35 + 5 = 40. you take the known constant and subtract by the answer of the equation and you get y.