3 years ago

What is 9 + 10 = ??

Mathematics

1 answer:

Levart [38]3 years ago

7 0

Answer:

Step-by-step explanation:

You might be interested in

What value do we need to complete the equation?

Sloan [31]

Answer:

h/2

Step-by-step explanation:

3 0

2 years ago

Alaska has a coastline of about 6.64 thousand miles. Florida has about 1.35 thousand miles of coastline. How many times more mil

victus00 [196]

All you need to do is divide 6.64 and 1.35. you would get 4.91851852. But, you need to round to the nearest tenth so it would actually be 4.9.

3 0

3 years ago

Rewrite the conditional statement in if-then form: 3x + 2 = 23, because x = 7

Flauer [41]

Answer:3(7)+2=23. 21+2=23

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

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

Lori entered a 100 km race. A Kilometer is about of a mile. About how many miles ling is the race?

djverab [1.8K]

Answer:

About 62.1371

Step-by-step explanation:

6 0

3 years ago