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3 years ago

What does this math sighn mea. plezzzzzz answer

Mathematics

1 answer:

Nikolay [14]3 years ago

7 0

Answer:

The symbol ∈ indicates set membership and means “is an element of” so that the statement x∈A means that x is an element of the set A.

Step-by-step explanation:

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A cylinder has a volume of 360 cubic centimeters. Find the volume of a cone with the same height and diameter as the cylinder.

ratelena [41]

The formula of a volume of a cylinder:

$V_{cylinder}=\pi r^2H$

The formula of a volume of a cone:

$V_{cone}=\dfrac{1}{3}\pi r^2H$

If a cone and a cylinder have the same radius and the same height, then a volume of a cylinder is three times greater than a volume of a cone.

$V_{cylinder}=3V_{cone}\\\\V_{cone}=\dfrac{1}{3}V_{cylinder}$

$V_{cylinder}=360\ cm^3$

$V_{cone}=\dfrac{1}{3}\cdot360\ cm^3=120\ cm^3$

<h3>Answer: The volume of a cone is equal 120 cm³.</h3>

3 0

3 years ago

Find the area of the shape

Oliga [24]

Answer:

27 pi

Step-by-step explanation:

First find the area of a circle

A = pi r^2

A = pi ^^2

36 pi

We know this is 3/4 of a circle so multiply the area by 3/4

3/4 * 36 pi

27 pi

6 0

4 years ago

Find x<br> 25<br> 7<br> х<br> I need help

Murljashka [212]

Answer:

24 = x

Step-by-step explanation:

You use Pythagorean theorem. Since the normal equation is $a^{2} + b^{2} =c^{2}$ , you already have the $c^{2}$ and another side which can be $a^{2}$ or $b^{2}$ .

Because you have the hypotenuse and a side , your equation looks like this now: $7^{2} +b^{2} = 25^{2}$

and when you solve for be you just subtract $25^{2} -7^{2}$ to get 24.

8 0

3 years ago

55 mi / h = ____ ft / s <br> a. 8.7 <br> c. 80.7 <br> b. 26.9 <br> d. 806.7

Tcecarenko [31]

The answer is c. If the answer is wrong i am sorry

4 0

4 years ago

What is the number of real solutions?

hichkok12 [17]

2 solutions, the root to the equation is the same as the root to the solution also known as “double roots”

8 0

3 years ago