Misty Duncan had $73.90 in cash receipt last month. Her cash receipt

Mathematics

1 answer:

lord [1]2 years ago

5 0

Huh I wish I could help!

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Find sin 22 1/2 ° please help

Georgia [21]

Answer:

0.69465837 is the answer

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2 years ago

−n/3 = 4 what does n equal

prisoha [69]

-n/3=4
-n/3 x 3=4 x 3
-n=12
-n/-1=12/-1
n=-12

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2 years ago

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Yuki888 [10]

It is reflection across y = x

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2 years ago

PLZ HELP I NEED THIS TO FINISH REEE PLZ ;-; So would my answer be 9b^8+24b^3

andrew11 [14]

Answer: 3b^3(3b^5+8)

Step-by-step explanation:

They have a 3 in common and both expressions have at least 3 b 's

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2 years ago

(sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x

Aliun [14]

As

$\tan x=\dfrac{\sin x}{\cos x}$
$\cot x=\dfrac{\cos x}{\sin x}$

we have

$\sin x(\tan x\cos x-\cot x\cos x)=\sin x\left(\sin x-\dfrac{\cos^2x}{\sin x}\right)=\sin^2x-\cos^2x$

Recalling that $\cos2x=\cos^2x-\sin^2x$ , we end up with

$-\cos2x=1-2\cos2x$
$1=\cos2x$
$\implies2x=2n\pi$

(where $n$ is any integer)

$\implies x=n\pi$

5 0

2 years ago