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shutvik [7]
3 years ago
9

What is the volume of a cylinder with a height of 4.5 cm and a base with a radius of 5.2 cm, to the nearest tenth of a cubic cen

timeter?
Mathematics
1 answer:
lawyer [7]3 years ago
3 0

Answer:

382.3

Step-by-step explanation:

v=πr²h

v=π(5.2)²(4.5)

v=about 382.27

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Oksana_A [137]
If we call 'D' the date in January, then at the end of D, there arr. 2^D people who have heard the rumor. 2^8 = 256 .
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3 years ago
A positive number is 3 times another number.
Juli2301 [7.4K]

Answer:

The smaller number can be 8 or \frac{1}{5}.

Step-by-step explanation:

Consider the provided information.

let the larger number is x and the smaller number is y

A positive number is 3 times another number.

3y=x

If we add 2 to the larger and 5 to the smaller, then one of them becomes 2 times the other.

Case I: If 2nd number is 2 times to the first number.

x+2=2(y+5)

Substitute the value of x.

3y+2=2y+10

y=8

Now substitute the value of y in 3y=x

3(8)=x

x=24

Therefore, the smaller number is 8.

Case II: If 1st number is 2 times to the second number.

2(x+2)=y+5

Substitute the value of x.

2(3y+2)=y+5

6y+4=y+5

5y=1

y=\frac{1}{5}

Therefore, the smaller number is \frac{1}{5}.

7 0
4 years ago
Find the radius of a circle with a circumference of 45pi centimeters
JulsSmile [24]

Answer:

<h2>The radius r = 22.5 cm</h2>

Step-by-step explanation:

The formula of a circumference of a circle:

C=2\pi r

r - radius

We have the circumference

C=45\pi\ cm

Substitute:

2\pi r=45\pi               <em>divide both sides by π</em>

2r=45        <em>dvide both sides by 2</em>

r=22.5\ cm

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aleksklad [387]

Answer:

f^{-1}(x)=-\frac{1}{8} x +\frac{1}{8}

Step-by-step explanation:

A linear function is always a one-to-one function.

Switch y and x.

x = -8y + 1

-1/8x + 1/8 = f(x)

8 0
3 years ago
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