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aliina [53]
3 years ago
14

You like the size of your mp3 player. the width is 4 centimeters. the length is 7 centimeters. the height measures 1 centimeter.

what is the surface area of your mp3 player, in square inches?
Mathematics
1 answer:
Lunna [17]3 years ago
7 0
Your mp player's shape is forming rectangular prism.
surface area of rectangular prism is : A= 2(wh+lw+lh)
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Answer:

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Step-by-step explanation:

4.5n + 2.5 = 19

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4.5n = 16.5

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n = 3.666 or (3 and 2/3)

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I think you mean in terms of \sin(x)?

Recall Euler's identity

e^{ix} = \cos(x) + i \sin(x)

and de Moivre's theorem

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where i=\sqrt{-1}.

It follows that

\sin(4x) = \mathrm{Im}\left(\cos(x) + i \sin(x)\right)^4

By the binomial theorem, expanding the right side gives

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and so

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We can factorize this as

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and using the Pythagorean identity

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