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marin [14]
2 years ago
12

Mary has a rectangular driveway. She measures it and finds out it is 14 1/4 feet long by 17 1/2 feet wide. She wants to know how

many square feet of paint she will need to completely cover the driveway. If each square foot of paint costs 40 cents, how much will she have to pay to cover her driveway? She will have to pay $_________ to cover her driveway. *​
Mathematics
1 answer:
lawyer [7]2 years ago
7 0
If I’m not mistaken it’s 99.75 dollars to cover her whole driveway
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lutik1710 [3]

The game is not fair as 6 times the expected sum is less than the cost, $43.

In the question, we are asked if the game is fair.

For the game to be fair, 6 times the expected sum for the pair from the game has to be greater than or equal to $43, that is,

6E(X) ≥ 43.

The expected sum for the pair, E(X) can be calculated using the formula,

E(X) = ∑x.p(x),

or, E(X) = 1/18 + 1/6 + 1/3 + 5/9 + 1/6 + 7/9 + 10/9 + 1 + 5/6 + 11/18 + 1/3,

or, E(X) = 107/18.

Now, 6E(X) = 6*(107/18) = 107/3 = 35.67.

Since, the total return from the game is $35.67, which is less than the cost of $43, the game is not fair.

Learn more about expected return from a game at

brainly.com/question/24855677

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Answer:

:)

Step-by-step explanation:

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