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Dovator [93]
2 years ago
8

Mrs. Torres’s class has 28 students. The class includes 12 boys. What is the

Mathematics
2 answers:
diamong [38]2 years ago
7 0

Answer:

4:3

Step-by-step explanation:

Because there are 12 boys out of the 28 students in the class, there would have to be 16 girls in the class. This information would make the ratio 16:12. Although that is not the lowest you can go, so you would divide both numbers by the same value, to get both as low as possible, in this case, you would divide both by 4. Now your ratio is 4:3, which can also be said as, for every 4 girls in the class, there are 3 boys.

Maslowich2 years ago
6 0

Answer:

16:12 or 4:3

Step-by-step explanation:

Girls + boys = 28

Girls + 12 = 28

Girls = 16

Girls to boys:

16:12

16/12

4:3

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The volume of a right cylinder is V = πr2h. If we have an oblique cylinder, like in the figure, what is the volume of a cross-se
olchik [2.2K]
Since you did not attach any picture we cannot say for sure what is the correct answer, but we can discuss the options in order to find the most probable correct answer.

First of all, according to the Cavalieri's principle, an oblique cylinder has the same volume as a right cylinder with the same base surface area and same height.
A cross-section of an oblique cylinder will be a small right cylinder with the same base surface area and a height as small as possible.

I guess the oblique cylinder has height h and it is divided into many (probably 10) cross-sections.

Option A: <span>πr2h
This is exactly the volume of the right cylinder, therefore, unless you are given a cross-section of height h (which would be too easy), this won't be the correct answer.

Option B: </span><span>4πr2h
This is 4 times the right cylinder. Again, here the height of the cross-section should</span> be 4h, but it doesn't sound like a possible data (too easy again).

Option C: <span>1 10 πr2h
Here comes a n issue with the notation: I think the right number you meant to write is (1/10)</span>·πr2h and not 110·<span>πr2h.
If I am right, this means that your oblique cylinder of height h is divided into 10 cross-sections, and therefore the volume of each of these cross-sections will be a tenth of the volume of the oblique cylinder, which means </span>1/10·<span>πr2h.

Option D: </span><span>1 2 πr2h
Here, we have the same notation issue as before. I think you meant (1/2)</span>·<span>πr2h.
Here, your oblique cylinder height h should be divided into only 2 cross-sections. Now, we said the cross-section's height should be the smallest as possible, so an oblique cylinder divided only into two pieces doesn't sound good.

Therefore, the most probable correct answer will be C) </span>(1/10)·<span>πr2h</span>
8 0
3 years ago
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I really need help what's the answer??
lys-0071 [83]
I think you just have to add all of the totals up??
5 0
2 years ago
Point M is will be plotted between L and N on the number line.
erica [24]

Answer:

The answer is 19

Step-by-step explanation:

I'm pretty sure the answer is 19

3 0
3 years ago
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Given the function below, if f(x) = -1, find
dmitriy555 [2]

Answer:

x = -3

Step-by-step explanation:

f(x) = 4x + 11

f(x) = -1

Substitute -1 for f(x)

-1 = 4x + 11

Subtract 11

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Divide by 4

-3 = x

x = -3

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2 years ago
Is y = 6/x proportional
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Answer:

inversely proportional

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