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arlik [135]
4 years ago
14

4. Five marbles are randomly selected with replacement. The probability that a black marble is chosen is 15%.

Mathematics
1 answer:
STatiana [176]4 years ago
6 0
Answer: You have a 16.49% percent chance of having at least 2 black marbles.

This is an example of a binomial distribution. We have an event (drawing a black marble) that is only 15% likely. Out of 5 chances, we need to determine the likelihood that this occurs at least two time.

You can look up these values on a Binomial Distribution table.

We had to add up the percents for drawing 2, 3, 4, or 5 black marbles.

2 - 0.1382
3 - 0.0244 
4 - 0.0022
5 - 0.0001

Adding up these values gives us 0.1649.
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Alenkinab [10]

Answer:

15x-6y=48

Step-by-step explanation:

So we have the system of equations:

5x-2y=16\\15x-7y=51

And we want to multiply the first equation by some constant such that the resulting equation matches the coefficient of [x] in the second equation.

We can see that the coefficient of x in the second equation is 15.

So, to match 15, we must multiply the first equation by 3. So:

3(5x-2y)=3(16)

Multiply:

15x-6y=48

And we're done!

5 0
3 years ago
Read 2 more answers
From a rope 15m long, 4 1/3 m is cut off and 3/5 of the remaining is cut off again. Find the length of the remaining part of the
Eddi Din [679]
15 - 4 1/3 = 10 2/3
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10 2/3 - 6 4/10 = 4 4/15

3 0
4 years ago
Pls help will give brainiest!!!
Artist 52 [7]

Answer:

ikaw mag sagut nyan tiba may utak ka? Tanga kaya mo na yan

Step-by-step explanation:

She's imperfect but she tries

She is good but she lies

She is hard on herself

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2 years ago
What is the solution to the rational equation x over 2x plus 1 minus 1 over 4 equals 2 over 2x plus 1
aalyn [17]
We want to solve
\frac{x}{2x+1} - \frac{1}{4} = \frac{2}{2x+1}

Subtract 2/(2x+1) from each side.
\frac{x}{2x+1} - \frac{2}{2x+1y} - \frac{1}{4} = 0

Add 1/4 to each side, and simplify the left side.
\frac{x-2}{2x+1} = \frac{1}{4}

Cross multiply.
4(x - 2) = 1(2x + 1)
4x - 8 = 2x + 1

Simplify and solve for x.
4x - 2x = 1 + 8
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Answer:  x =  \frac{9}{2} \,\, or \,\, x = 4 \frac{1}{2}

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3 years ago
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Helga [31]

Answer

Hello class!

Step-by-step explanation:

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3 years ago
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