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2 years ago

Is the following number rational or irrational? -3+\pi−3+π

Mathematics

1 answer:

vampirchik [111]2 years ago

8 0

Answer:

Irrational

Step-by-step explanation:

I hoped this helped, I don't know if it's right

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Find the reciprocal of 2/7 1/9 3/8 1/2 11/12

Verizon [17]

A reciprocal is when you take the numerator and the denomenator switch.

So the reciprocal of 2/7 1/9 3/8 1/2 and 11/12 is 7/2 9/1 8/3 2/1 and 12/11

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3 years ago

Someone PLEASE HELP ME<br><br>Find the slope of the line <br><br>Algebra 1

olasank [31]

Answer:

Step-by-step explanation:

using rise over run method, from (0,20) to (1,80) the line slants up by degree of 60 per one unit so the slope is 60.

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3 years ago

Read 2 more answers

Can someone please help me with this ?!!

bija089 [108]

Answer:

I believe the answer is B

Step-by-step explanation:

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3 years ago

Find the integration of (1-cos2x)/(1+cos2x)

slega [8]

Given:

The expression is:

$\dfrac{1-\cos 2x}{1+\cos 2x}$

To find:

The integration of the given expression.

Solution:

We need to find the integration of $\dfrac{1-\cos 2x}{1+\cos 2x}$ .

Let us consider,

$I=\int \dfrac{1-\cos 2x}{1+\cos 2x}dx$

$I=\int \dfrac{2\sin^2x}{2\cos^2x}dx$ $[\because 1+\cos 2x=2\cos^2x,1-\cos 2x=2\sin^2x]$

$I=\int \dfrac{\sin^2x}{\cos^2x}dx$

$I=\int \tan^2xdx$ $\left[\because \tan \theta =\dfrac{\sin \theta}{\cos \theta}\right]$

It can be written as:

$I=\int (\sec^2x-1)dx$ $[\because 1+\tan^2 \theta =\sec^2 \theta]$

$I=\int \sec^2xdx-\int 1dx$

$I=\tan x-x+C$

Therefore, the integration of $\dfrac{1-\cos 2x}{1+\cos 2x}$ is $I=\tan x-x+C$ .

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2 years ago

Select the answer that contains one countable noun and one uncountable noun

elena-14-01-66 [18.8K]

Mamdiiajfhxtxusisudjdsusi

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2 years ago