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hodyreva [135]
3 years ago
13

Roulette is a casino game that involves players betting on where a ball will land on a spinning wheel. An American roulette whee

l has 38 numbered slots — half of the slots from 1 to 36 are red and the other half are black. Slots 0 and 00 are both green.
Suppose that a player bets $1 on the color red. If the ball lands in a red slot, the player gets their initial $1 back plus a payout of $1. If the ball doesn't land in a red slot, they lose their $1 bet. Let X= the player's net gain from a $1 bet on a the color red. Here is the probability distribution of X:


Win Lose

X=net gain $1 -$1

P(X) 18/38 20/38


Calculate the mean of X

You may round your answer to the nearest thousandth.
Mathematics
2 answers:
Dvinal [7]3 years ago
4 0

Answer:

-2/38

Step-by-step explanation:

nikitadnepr [17]3 years ago
3 0

Answer:   -0.053

Step-by-step explanation:

1•(18/38) + -1 •(20/18) = -0.053

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Answer:

The three angles of the triangle given above are 23, 73 and 84 correct to the nearest degree. The concept of dot product under vectors was applied in solving this problem. The three positions forming the triangle were taken as positions vectors. The Dot product also known as scalar product is a very good way of finding the angle between two vectors. ( in this case the sides of the triangle given above). Below is a picture of the step by step procedure of the solution.

Step-by-step explanation:

The first thing to do is to treat the given positions in space as position vectors which gives us room to perform vector manipulations on them. Next we calculate the magnitude of the position vector which is the square root of the sun of the square of the positions of the vectors along the three respective axes). Then we calculate the dot product. After this is calculated the angle can then be found easily using formula for the dot product.

Thank you for reading this and I hope it is helpful to you.

4 0
3 years ago
Which of the following are true
Eva8 [605]
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6 0
3 years ago
Suzie's Nursery is having a sale on two kinds of plants, venus fly traps and bonsai trees.
ANTONII [103]

Answer:

Venus fly trap = 12

Bonsai tree = 17

Step-by-step explanation:

Given that :

Venus fly trap = $3per plant

Bonsai tree = $5 per plant

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Let venus fly trap = x ; bonsai tree =y

x + y = 29 ___ (1)

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From (1) :

x = 29 - y

In (2):

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87 + 2y = 121

2y = 121 - 87

2y = 34

y = 34/2

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Hence,

Venus fly trap = 12

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3 years ago
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