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E(winnings) = (5 x (1/6)) + (2 x (1/6) + (1 x (1/6)) = 5/6 + 2/6 + 1/6 = 8/6 = $1.33
Answer 9.26
Step-by-step explanation:
5.9/2=2.95x3.14=9.263=9.26
Answer:
The equation is -3x^2 + 30x + 225 = 0, and the number of days is 15.
Step-by-step explanation:
I assume an x is missing, and the function is h(x) = -3x^2 + 30x + 225
You want to know the number of days in which the function value is zero.
-3x^2 + 30x + 225 = 0
Divide both sides by -3.
x^2 - 10x - 75 = 0
(x - 15)(x + 5) = 0
x - 15 = 0 or x + 5 = 0
x = 15 or x = -5
We discard the negative solution.
Answer: The equation is -3x^2 + 30x + 225 = 0, and the number of days is 15.
