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melisa1 [442]
3 years ago
9

Don't mind my work but can someone give the answer for 50

Mathematics
2 answers:
Sever21 [200]3 years ago
8 0
The surface area of Micah's ramp is 
          (12 + 13 + 5 ) * 6 + 2 ( 1/2 * 12 * 5 )
                    30         *  6 +           60
                              180     +          60
                                           240 ft
Charra [1.4K]3 years ago
5 0
The answer to question 50 is A. 240 square feet
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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

###

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.

5 0
3 years ago
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50 pts if u anser this 4 me. thanks!
eimsori [14]

Answer:

the 1 mile and 3,218 meters in step 1 should be switched

6 0
3 years ago
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3x+(24x+8)what is the answer ​
Keith_Richards [23]

We can get rid of the parentheses so it looks like this:

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Ainat [17]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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