You play a carnival game where you have to throw a ball into a barrel to win a $20 prize. You will play a maximum of three times, but walk away if you win. If it costs $4 to play and you have a 5% chance of making a throw, find the expected value and standard deviation of your "winnings" (cost included).

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.

26

step-by-step explanation:

15 units use socratic

step-by-step explanation: 15 units

75%

step-by-step explanation: