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jolli1 [7]
3 years ago
15

5 more than 3 times a number w

Mathematics
1 answer:
Mila [183]3 years ago
5 0
3 times w+5

3xW+5 ......
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Step-by-step explanation:

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Which of the following are valid probability distributions for a discrete random variable
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All of them except B and C.  Probabilities must add to 1 and none of the p's can be negative
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Suppose you choose a marble from a bag containing 3 red marbles, 5 white marbles, and 4 blue marbles. You return the first marbl
Veseljchak [2.6K]

Answer:

P(red and blue) = 0.1667

Step-by-step explanation:

Let A represent choosing a red marble, there are 3 red marbles

Let B represent choosing a blue marble, there are 4 blue marbles

There are 12 total marbles

Then...

P(A) = 3/12

P(B) = 4/12

choosing the first one, then replacing means the first choice has no effect on the probabilities of the second choice, so the situation is independent.  

When calculating the probability of independent events, you multiply the probabilities together.  There are 2 scenarios where we can get a red and blue marble..

Choosing a red, then a blue marble, the probability is

(3/12)( 4/12) = 12/144 = 1/12

Choosing a blue, then a red marble, the probability is

(4/12)(3/12) = 12/144 = 1/12

So we have a

(1/12) + (1/12) = 2/12 = 1/6 chance for that to happen, to

P(A and B) = 1/6 = 0.1667

6 0
3 years ago
A circle with area 9pi has a sector with a central angle of 1/9pi radians. What is the area of a sector? Either enter an exact a
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Step-by-step explanation:

5 0
3 years ago
PLEASE HELP ASAP!!!!!!!!!! EASY MATH 25 PTS
Harman [31]

its not worth 25 points but ok here u go let's solve your equation step-by-step.

3y−1=13−4y

Step 1: Simplify both sides of the equation.

3y−1=13−4y

3y+−1=13+−4y

3y−1=−4y+13

Step 2: Add 4y to both sides.

3y−1+4y=−4y+13+4y

7y−1=13

Step 3: Add 1 to both sides.

7y−1+1=13+1

7y=14

Step 4: Divide both sides by 7.

7y

7

=

14

7

y=2

Answer:

y=2 so there your answer is this equation has one solution  your welcome

4 0
3 years ago
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