The answer is X=3 or x=5/3
Answer:
Step-by-step explanation:
The expected value is the probability of an event multiplied by the number of times the event happens. And if there is more than 1 event, the expected value is the sum of those.
There are 52 cards in a deck.
There are 12 face cards in a deck. (gain 10)
There are 4 ace in a deck. (gain 20)
Any other card is 36 of them. (lose 5)
The probability of face card is 12/52
The probability of ace is 4/52
The probability of any other card is 36/52
Thus the expected values is:
(12/52)(10) + (4/52)(20) + (36/52)(-5) = $0.38
Answer:
3.16 inches
Step-by-step explanation:
Sqrt 10 = 3.16 inches
20/35 gallons per hour
(20/35) * 47 = around 27 gallons in 47 hours
Answer:
66.6%
Step-by-step explanation:
40/60=4/6=2/3
2/3=66.6
