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Svetradugi [14.3K]
3 years ago
8

Please help! What is the answer to this question?​

Mathematics
1 answer:
valentinak56 [21]3 years ago
5 0

Answer:

b. 80

Step-by-step explanation:

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A fish take contains 16 goldfish and 24 guppies. If you randomly select 2 fish, what is the probability that they are both goldf
Nostrana [21]

The probability of drawing a goldfish on the first draw is 16 / ( 16 + 24 ), or 16/40, or 2/5. Supposing that the first fish drawn is actually a goldfish, then there are 15 goldfish left among 39 fish, and the probability of drawing a goldfish on the 2nd draw is 15/39, or 5/13. The (joint) probability of drawing 2 goldfish on the 1st 2 draws, without replacement, is (5/13)(2/5) = 2/13.

5 0
3 years ago
The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift.
garik1379 [7]

Answer:

The probability that X is less than 32 minutes is 0.736.

Step-by-step explanation:

Given : The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift. If X has an average value of 24 minutes.

To find : What is the probability that X is less than 32 minutes?

Solution :

If X has an average value of 24 minutes.

i.e. \lambda=24

The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift.

The exponentially function is \frac{1}{\lambda}e^{-\frac{x}{\lambda}}

The function form according to question is

f(x)=\{\frac{1}{24}e^{-\frac{x}{24}}, x>0\}

The probability that X is less than 32 minutes is

P[x

P[x

P[x

Therefore, the probability that X is less than 32 minutes is 0.736.

7 0
3 years ago
Ed and carol are jogging around a circular track in the park. the diameter of the track is 0.8 miles. find, to the nearest mile,
Katen [24]
Pi times 0.8 = 2.513274123 ( one trip )
2 times 2.513274123 = 5.02654826

So the answer is 5.02654826 and you’ll round it to 5 miles
5 0
3 years ago
Giuliana has 22 quarters and dollar coins worth a total of $10.75.Which equation can be used to find d, the number of dollar coi
Ganezh [65]
0.25(22 - d)+d=10.75
7 0
3 years ago
Read 2 more answers
If one movie ticket cost $15, how much will 5 movie tickets cost
Anettt [7]

Answer:

$75

Step-by-step explanation:

15 x 5 = 75

trust me bro :)

7 0
3 years ago
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