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Dmitriy789 [7]
3 years ago
13

7. A bag contains 6 red and 10 black

Mathematics
2 answers:
Tanya [424]3 years ago
8 0

Answer:

125

Step-by-step explanation:

To find the expected number of black marbles, take the probability of getting a black marble times the number of marbles drawn

P(black) * 200

5/8 *200

125

We should expect 125 black marbles

Vaselesa [24]3 years ago
3 0

Answer:

125

Step-by-step explanation:

Once you have the theoretical probability of picking a black marble which is 5/8, just multiply the number of drawings by 5/8 to get the answer to problem 8.

200 * 5/8 = 1000/8 = 125

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3 years ago
Trapezoid ABFE is similar to trapezoid EFCD. What is the length of DC?
Murrr4er [49]

Answer:

6.75

Step-by-step explanation:

Find the relationship between the trapezoids. You can see that the top of trapezoid ABFE is 3 units and the top of EFCD is 4.5 units. 3 * 1.5 = 4.5, so t the sides of trapezoid EFCD are 1.5 times more than the sides of ABFE.

Now, you know the bottom of ABFE is 4.5, so the bottom of EFCD is 1.5 times longer because they are proportional, so you can do 4.5 * 1.5 = 6.75 units.

4 0
3 years ago
Need help on this question
faust18 [17]

Answer:

Step-by-step explanation:

5 units

8 0
3 years ago
Look at this graph: 10 9 8 7 6 5 3 2 1 х 0 1 2 3 4 5 6 7 8 9 10 What is the slope? Simplify your answer and write it as a proper
ollegr [7]

Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
HELPPPPPPPPP i have the most trouble with math what’s the answer??
kiruha [24]

Answer:

option B

3

Step-by-step explanation:

Given in the question an expression

\sqrt\frac{48}{x}

Whole numbers are positive numbers, including zero, without any decimal or fractional parts.

Possible range of domain will be 1 ≤ x ≤ 48

We know that perfect square between 1 and 48 are

1 , 4 , 16 , 25 , 36

1)

x = 3

√48/3 = √16 = 4

2)

x = 12

√48/12 = √4 = 2

3)

x = 48

√48/48 = √1 = 1

4 0
4 years ago
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