A casino offers a game that it calls “money in the bag”. The rules of the game are simple: They put a $100 bill and ten $1 bills in a bag, and they shake the bag very vigorously. For $10, you can reach into the bag and pull one thing out. You might get the $100, but more likely you’ll get a lousy dollar. Calculate the expected value of playing this game in the casino. In other words, for each $10 that you spend in order to play this game, how much money should you expect to win back?

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6

what are the answer choices given for this problem?

i think it will be 4feet long of what i comprehend

  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