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olasank [31]
3 years ago
11

In a class of 30 students, 6 have a brother and 12 have a sister. There are 14 students who do not have any siblings. What is th

e probability that a student chosen randomly from the class has a brother and a sister?
Mathematics
1 answer:
NeTakaya3 years ago
6 0

Answer:

32 siblings from the class theres a possibility that some students had more siblings and not everyone has one

Step-by-step explanation:

.

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I'm having trouble finding out the answer to this question. Some please help
LUCKY_DIMON [66]

Answer:

Search it up

Step-by-step explanation:

6 0
3 years ago
A rancher has 400 feet of fencing to put around a rectangular field and then subdivide the field into 22 identical smaller recta
Fudgin [204]

Answer:

Overall rectangle: 100 ft × 8 16/23 ft ≈ 100 ft × 8.696 ft

Individual pen: 8 16/23 ft × 4 6/11 ft ≈ 8.696 ft × 4.545 ft

Step-by-step explanation:

Half the fence will be used in each of the orthogonal directions to make the pen. That is, the long side of the overall rectangle will be (400 ft/2)/2 = 100 ft. The short side of the overall rectangle will be (400 ft/2)/23 = 8 16/23 ft. (There are 21 partitions between the 22 pens, and 2 end fences, for a total of 23 fence segments of the short length.)

The long (100 ft) side of the overall rectangle is divided into 22 parts by the internal partitions, so each pen will have a short dimension of 100 ft/22 = 4 6/11 ft.

_____

We know half the fence will be used in each direction because we know the total area is a quadratic function of the side length. If the long side of the overall pen is x, then the short side is (400 ft -2x)/23, and the overall area is ...

... A = x(400 ft -2x)/23

The vertex of this quadratic function is halfway between the zeros, at x = 100 ft. That is, the two long sides of the pen total 200 ft, or half the overall length of fence.

3 0
3 years ago
What percent is 25 is 12
Ray Of Light [21]

Answer: 48%

Step-by-step explanation:

I believe you meant, what percent of 25 is 12.

In that case, you would do 12/25 which equals 0.48

To convert a decimal into a percent, you would move the decimal point over 2 digits to the right. That would make 0.48 into 48%

So 48% is the answer.

Hope this helps :)

8 0
3 years ago
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How do you sketch and label a trapezoid that has an area of 100 cm2
kirill115 [55]

Answer:

if you want to sketch the trapezoid you will also need other dimensions like height and the length of the parallel sides

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3 years ago
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Y = 3x do this fast plz
mash [69]

Answer:

Step-by-step explanation:

3 0
3 years ago
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