3 years ago

When it rains I get tired. It's raining today. I'm going to take a nap.

Mathematics

1 answer:

tankabanditka [31]3 years ago

7 0

Answer:

None of the Above

Step-by-step explanation:

Hope this helps

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PLEASE HELP ASAP!!!!

Bond [772]

Answer: 518

Step-by-step explanation:

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3 years ago

Find the value of tan(sin^-1(1/2))

suter [353]

If you know that $\sin\dfrac\pi3=\dfrac12$ , then you know right away

$\tan\left(\sin^{-1}\dfrac12\right)=\tan\dfrac\pi3=\dfrac1{\sqrt}3=\dfrac{\sqrt3}3$

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Otherwise, you can derive the same result. Let $\theta=\sin^{-1}\dfrac12$ , so that $\sin\theta=\dfrac12$ . $\sin^{-1}$ is bounded, so we know $-\dfrac\pi2\le\theta\le\dfrac\pi2$ . For these values of $\theta$ , we always have $\cos\theta\ge0$ .

So, recalling the Pythagorean theorem, we find

$\cos^2\theta+\sin^2\theta=1\implies\cos\theta=\sqrt{1-\sin^2\theta}=\sqrt{1-\left(\dfrac12\right)^2}=\dfrac{\sqrt3}2$

Then

$\tan\theta=\tan\left(\sin^{-1}\dfrac12\right)=\dfrac{\sin\theta}{\cos\theta}=\dfrac{\frac12}{\frac{\sqrt3}2}=\dfrac1{\sqrt3}=\dfrac{\sqrt3}3$

as expected.

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3 years ago

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#12 only please I need to turn this in tommorow help

alexandr1967 [171]

Answer:

B hope it helps!

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4 years ago

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Your teacher is selecting class partners by drawing names out of a bag. There are 12 girl's names and 10 boy's names. What is th

sasho [114]

The answer would be A)20/77.
The reason is that without replacement it would go (10/22)*(12/21)=0.2597
You can do the easy route I did then do (20/77) which would also give you 0.2597.

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3 years ago

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After the holidays, Christmas decorations are marked down 60%! If Mr. Buchser wanted to buy an inflatable snowman for the front

Dmitry_Shevchenko [17]

$160* 0.6= 96
160-96= $64
The snowman cost $64

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3 years ago