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3 years ago

Need help fast!!!!!!

Mathematics

1 answer:

Alex17521 [72]3 years ago

7 0

Answer:

if im correct i think the answer is y=1.25x-0.5

Step-by-step explanation:

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Reid is taking piano and trumpet lessons. He likes the piano more, and last month

castortr0y [4]

Answer:

he would have spent 10 hours on the piano.

Step-by-step explanation:

every time he practices he practices two more hours on the piano then on the trumpet times that by two and you have your answer

7 0

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

$\frac{V'}{A'}=\frac{\frac{2}{3}\pi r^3}{3\pi r^2}=\frac{2}{9}r$

6 0

3 years ago

Which term describes 2x + 5 = 17?

ki77a [65]

Answer:

Expression

Step-by-step explanation:

6 0

3 years ago

Use the GCF and the distributive property to find the expression that is equivalent to 18+27.

viktelen [127]

The answer is 45!
Merry Christmas

4 0

3 years ago

Read 2 more answers

[10 Points, Algebra 2-simplifying complex fractions]

IrinaK [193]

The restrictions are what the denominator can not be. The denominator cannot be zero. So if the denominator has x+1 in it. If you put -1 in place of x. You would get zero. -1 is a restriction

6 0

3 years ago