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Vedmedyk [2.9K]
3 years ago
5

SOMEONE PLS HELP ME:))

Mathematics
1 answer:
Alexxandr [17]3 years ago
7 0
You dont have a question on here??
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A group of researchers investigated the contamination of medical personnel clothing at a New York hospital since there is a pote
GarryVolchara [31]

Answer:

B because idk lucky guess maybe :)

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4 years ago
Which equations are related equations to x + 4 = 15?
Setler [38]
First one is wrong bcs it should be smaller than the answer.
The second one is correct bcs to find the second number we need to do inverse operation, here is subtraction.
Third one is correct bcs this is the same (but if u r searching only for relating not same, then the third kind of wrong)
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3 years ago
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Solve for x (x-6)^2-5=0
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Answer:

x=6+√5 or x=6−√5

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3 years ago
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How do I do this ffs
lidiya [134]

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3 years ago
A game advertises, EVERYONE IS A WINNER! It costs $1 to play. You get to choose a card from a standard deck of 52
SashulF [63]

Answer:

X_{red} = 3, p(red) =\frac{1}{2}

X_{black} = 2, p(red) =\frac{1}{2}

And the cost of play would be 1 with probability 1 for any given game. Then we can find the expected value like this:

E(X) = 3 *\frac{1}{2} +2 \frac{1}{2} -1

And solving we got:

E(X) = 1.50

And then the best answer for this case would be:

$1.50

Step-by-step explanation:

For this case we can calculate the expected value with this formula:

E(X) =\sum_{i=1}^n X_i P(X_i)

We assume that the standard deck is formed just with red and black cards. For this case we have the following info:

X_{red} = 3, p(red) =\frac{1}{2}

X_{black} = 2, p(red) =\frac{1}{2}

And the cost of play would be -1 with probability 1 for any given game. Then we can find the expected value like this:

E(X) = 3 *\frac{1}{2} +2 \frac{1}{2} -1

And solving we got:

E(X) = 1.50

And then the best answer for this case would be:

$1.50

3 0
3 years ago
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