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3 years ago

Can someone pleaseeee help me out ??

Mathematics

2 answers:

Artyom0805 [142]3 years ago

8 0

Answer:

Step-by-step explanation:

Factor out 3 since it is the max you can factor out

3(3-4x+2y)

podryga [215]3 years ago

8 0

Hello.

The answer is 3.

I hope u have a wonderful day today!

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Ten coins weigh 25 grams how much does 1 coin weigh

kykrilka [37]

You need to divide here! Ok so if ten coins weigh twenty five grams, we need to do:
10÷25=?
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3 years ago

The perimeter of a certain rectangle is 16 times the width. The length is 12 cm more than the width. Find the length and width o

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3 years ago

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Harlamova29_29 [7]

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3 years ago

A storage tank will have a circular base of radius r and a height of r. The tank can be either cylindrical or hemispherical (ha

Neko [114]

Answer:

Volume: $\frac{2}{3}\pi r^3$

Ratio: $\frac{2}{9}r$

Step-by-step explanation:

First of all, we need to find the volume of the hemispherical tank.

The volume of a sphere is given by:

$V=\frac{4}{3}\pi r^3$

where

r is the radius of the sphere

V is the volume

Here, we have a hemispherical tank: a hemisphere is exactly a sphere cut in a half, so its volume is half that of the sphere:

$V'=\frac{V}{2}=\frac{\frac{4}{3}\pi r^3}{2}=\frac{2}{3}\pi r^3$

Now we want to find the ratio between the volume of the hemisphere and its surface area.

The surface area of a sphere is

$A=4 \pi r^2$

For a hemisphere, the area of the curved part of the surface is therefore half of this value, so $2\pi r^2$ . Moreover, we have to add the surface of the base, which is $\pi r^2$ . So the total surface area of the hemispherical tank is

$A'=2\pi r^2 + \pi r^2 = 3 \pi r^2$

Therefore, the ratio betwen the volume and the surface area of the hemisphere is

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3 years ago

845/676×100% what is the Ans

liraira [26]

845/676=1.25(100)=125

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3 years ago