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zaharov [31]
3 years ago
10

Somebody help me with this 20 points ☺️

Mathematics
1 answer:
Musya8 [376]3 years ago
7 0

Answer:

4(2x-10)=48

8x-40=48

Then simplify

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Ayo runs a fairground game.In each turn, a player rolls a fair dice numbered 1 - 6 and spins a fair spinner numbered 1 - 12.It c
aksik [14]

Using the definition of expected value, it is found that Ayo can be expected to make a profit of £55.8.

The <em>expected value</em> is given by the <u>sum of each outcome multiplied by it's respective probability.</u>

In this problem:

  • The player wins $6, that is, Ayo loses £6, if he rolls a 6 and spins a 1, hence the probability is \frac{1}{6} \times \frac{1}{12} = \frac{1}{72}.
  • The player wins $3, that is, Ayo loses £3, if he rolls a 3 on at least one of the spinner or the dice, hence, considering three cases(both and either the spinner of the dice), the probability is \frac{1}{6} \times \frac{1}{12} + \frac{1}{6} \times \frac{11}{12} + \frac{5}{6} \times \frac{1}{12} = \frac{1 + 11 + 5}{72} = \frac{17}{72}
  • In the other cases, Ayo wins £1.40, with 1 - \frac{18}{72} = \frac{54}{72} probability.

Hence, his expected profit for a single game is:

E(X) = -6\frac{1}{72} - 3\frac{17}{72} + 1.4\frac{54}{72} = \frac{-6 - 3(17) + 54(1.4)}{72} = 0.2583

For 216 games, the expected value is:

E = 216(0.2583) = 55.8

Ayo can be expected to make a profit of £55.8.

To learn more about expected value, you can take a look at brainly.com/question/24855677

6 0
3 years ago
I need help ASAP please
ElenaW [278]
What question 4 or 5?oh....
4 0
3 years ago
Need help on question hurry
Hoochie [10]

Answer: C

Step-by-step explanation: it is c trust me

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3 years ago
A new shoe comes in three colors: tan, navy, or black. It also comes in full sizes 4 to 11. If a pair of shoes is chosen at rand
Bess [88]
Three colors * 8 possible sizes = 24 different shoes

The probability that the shoe is going to be a size 9 black shoe is 1/24.
5 0
3 years ago
A number cube is rolled and a coin is flipped. Predict how many times you would get heads and a number less than 3 in 240 trials
Novosadov [1.4K]
The answer to this is 40 
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3 years ago
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