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2 years ago

-4(x+5)=-4x-20 one solution many aolution infinite solutions?

Mathematics

1 answer:

Dmitriy789 [7]2 years ago

6 0

Answer:

Step-by-step explanation:

-40-20=4x-20 _ -40-20+20=4x _ x=-10

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Help with #23 pleaseee

Thepotemich [5.8K]

Answer:

53 degrees

angle DCE is congruent to angle DAE.

3 0

2 years ago

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What is the answer?

Mrrafil [7]

Answer:

53°

Step-by-step explanation:

The angle that measures 143 is vertical to the right angle and the ? angle.

Vertical angles have the same measure. <? + <90 = <143

So do 143 - 90 = 53

So the ? angle = 53

Hope this helps ya!!

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3 years ago

Which equation is true when n=1.2

enot [183]

Answer:

5+1.2=6.2

Step-by-step explanation:

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3 years ago

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Determine whether the integral is convergent or divergent. ∫[infinity] 2 e^−1/x / x^2 dx : O Convergent O divergent If it is con

monitta

Let $f(x)=e^{-1/x}$ . Then $f'(x)=\frac1{x^2}e^{-1/x}>0$ for all $x\ge2$ , so $f$ is strictly increasing. As $x\to\infty$ , $e^{-1/x}\to e^0=1$ , so $f$ is bounded above by 1. This is to say,

$e^{-1/x}$

and the integral of $\frac1{x^2}$ converges over the same domain, so this integral must also converge by comparison.

We have, by setting $y=-\frac1x$ ,

$\displaystyle\int_2^\infty\frac{e^{-1/x}}{x^2}\,\mathrm dx=\int_{-1/2}^0e^y\,\mathrm dy=e^0-e^{-1/2}=1-\frac1{\sqrt e}$

8 0

2 years ago

Please help! Will give brainliest! Trig ratio!

DiKsa [7]

Good question!

First of all, you need to be aware of the following trigonometrical ratios\functions:

For angle A:

adjacent=12
opposite=35
hypotenuse=37

Hence:
$cos(A)= \frac{12}{37} 
\\~\\
sin(A)= \frac{35}{37} 
\\~\\
tan(A)= \frac{35}{12}$

I hope that helps!

I am with you if you faced any difficulties!

4 0

3 years ago