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3 years ago

WILL GIVE BRAINLIEST IF RIGHT!!

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

6 0

Answer:

True

Step-by-step explanation:

Two angles form a pair of complementary angles

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HELPP AND SHOW YOUR WORK!!!

GarryVolchara [31]

Answer:

B) $-10x+30$

Step-by-step explanation:

You distribute:

-10 times X minus 3 ( -10*x-3)

Which gives you:

Answer: -10x+30

Hope this helps!

3 0

3 years ago

A right triangle \mathrm{ABC}ABC is shown. What is cos AA?

maria [59]

Answer:

Step-by-step explanation:

6 0

3 years ago

Integrate the following

enot [183]

I suppose you mean to have the entire numerator under the square root?

$\displaystyle\int_2^4\frac{\sqrt{x^2-4}}{x^2}\,\mathrm dx$

We can use a trigonometric substitution to start:

$x=2\sec t\implies\mathrm dx=2\sec t\tan t\,\mathrm dt$

Then for $x=2$ , $t=\sec^{-1}1=0$ ; for $x=4$ , $t=\sec^{-1}2=\frac\pi3$ . So the integral is equivalent to

$\displaystyle\int_0^{\pi/3}\frac{\sqrt{(2\sec t)^2-4}}{(2\sec t)^2}(2\sec t\tan t)\,\mathrm dt=\int_0^{\pi/3}\frac{\tan^2t}{\sec t}\,\mathrm dt$

We can write

$\dfrac{\tan^2t}{\sec t}=\dfrac{\frac{\sin^2t}{\cos^2t}}{\frac1{\cos t}}=\dfrac{\sin^2t}{\cos t}=\dfrac{1-\cos^2t}{\cos t}=\sec t-\cos t$

so the integral becomes

$\displaystyle\int_0^{\pi/3}(\sec t-\cos t)\,\mathrm dt=\boxed{\ln(2+\sqrt3)-\frac{\sqrt3}2}$

7 0

3 years ago

Statement about 23 over six as a mixed number

pickupchik [31]

23/6
23 divided by 6 is 3 remainder 5 so it is 3 5/6

Hope this helps :)

8 0

3 years ago

I WILL GIVE CROWN PLS HELP NEED RIGHT ANSWER

FromTheMoon [43]

Answer:

Step-by-step explanation:

Surely you can figure out how many stairs she has to climb. She has to go down 4, back up to 0, and then up another 4, then back to 0

4 0

3 years ago

Read 2 more answers