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2 years ago

Find the circumference of the circle with the given radius or diameter. (Use 3.14 for it) r=20

Mathematics

2 answers:

Margarita [4]2 years ago

6 0

Answer:

$\huge\boxed{C\approx125.6}$

Step-by-step explanation:

The formula of a circumference of a circle:

$C=d\pi=2\pi r$

d - diameter

r - radius

We have the radius r = 20.

Substitute:

$C=2\pi(20)=40\pi$

use π ≈ 3.14

$C\approx(40)(3.14)=125.6$

iogann1982 [59]2 years ago

4 0

Answer:

C = 2πr = 2 * 3.14 * 20 = 125.6

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Algebra 2 help please ASAP

Burka [1]

Answer:

The option A,D and E are correct.

Step-by-step explanation:

Given: 2x^3-250x^2

Factor : 2x^2(x-125)

So, GCF = 2x^2

Now a = 1 and b= 5

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(x)^3 - (5)^3 = (x-5)(x^2+5x+25)

So, the option A,D and E are correct.

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Answer:

Step-by-step explanation:

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2 years ago

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svetlana [45]

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2 years ago

F(x) = x2 + 1 g(x) = 5-x (f+g)(x) = O x2 + x-4 x²+x+4 O x2-x+6 O x2 + x + 6

charle [14.2K]

Answer:

$\boxed{(f + g)(x) = {x}^{2} - x + 6}$

Given:

$f(x) = {x}^{2} + 1 \\ \\ g(x) = 5 - x$

To Find:

$(f + g)(x) = f(x) + g(x)$

Step-by-step explanation:

$= > f(x) + g(x) = ({x}^{2} + 1) + (5 - x) \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = {x}^{2} + 1 + 5 - x\\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = {x}^{2} + 6 - x\\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = {x}^{2} - x + 6$