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baherus [9]
3 years ago
13

Estimate 368+231 two different ways

Mathematics
2 answers:
Greeley [361]3 years ago
6 0
Well, 300 + 200 = 500. 60 + 30 = 80. 8 + 1 = 9. Rounding it up, it would be 590.
Alex_Xolod [135]3 years ago
6 0
400+200=600 370+230=600
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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
Read 2 more answers
Thank you guys fir the help
Lubov Fominskaja [6]
The correct answer to that would be b
4 0
3 years ago
a bowl can hold 3 1/3 cups of water. a bowl can hold 2 3/5 timea the amount in the glass. how many cups can a bowl hold?
nadezda [96]
Since it says ''times'', you have to change the mixed numbers into fractions which will turn the equation into 10/3 x 13/5 which = 130/15. When you turn that into a mixed number, it changes into 8 10/15 or 8 2/3.

ANSWER: 8 2/3

7 0
3 years ago
Write the equation of the line that is perpendicular to y = 2x - 4 that goes through
user100 [1]

Answer:

y = 2x + 13

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please help... no links ​
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If I get a uniform then I make the team.
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