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Brums [2.3K]
3 years ago
11

Cost of a cell phone $249.50 markup 30%

Mathematics
2 answers:
Mars2501 [29]3 years ago
5 0

Multiply the price by 1 + the markup percentage:

249.50 x 1.30 = $324.35

EleoNora [17]3 years ago
4 0

Answer: $324.35

Step-by-step explanation:

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Answer:

See the proof below.

Step-by-step explanation:

For this case we need to proof the following indentity:

tan(x+y) = \frac{tan (x) + tan(y)}{1- tan(x) tan(y)}

So we need to begin with the definition of tangent, we know that tan (x) =\frac{sin(x)}{cos(x)} and we can do this:

tan (x+y) = \frac{sin (x+y)}{cos(x+y)}   (1)

We also have the following identities:

sin (a+b) = sin (a) cos(b) + sin (b) cos(a)

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Now we can apply those identities into equation (1) like this:

tan (x+y) =\frac{sin (x) cos(y) + sin (y) cos(x)}{cos(x) cos(y) - sin(x) sin(y)}   (2)

We can divide numerator and denominator from expression (2) by \frac{1}{cos(x) cos(y)} we got this:

tan (x+y) = \frac{\frac{sin (x) cos(y)}{cos (x) cos(y)} + \frac{sin(y) cos(x)}{cos(x) cos(y)}}{\frac{cos(x) cos(y)}{cos(x) cos(y)} -\frac{sin(x)sin(y)}{cos(x) cos(y)}}

And simplifying we got:

tan (x+y) = \frac{tan(x) + tan(y)}{1-tan(x) tan(y)}

And that complete the proof.

8 0
3 years ago
The diagram shows a rectangular garden path.
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Answer:

Step-by-step explanation:12

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504

Step-by-step explanation:

<u>Step 1:  Multiply</u>

<u />9 * 56

504

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5 0
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irina [24]

Answer:

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Step-by-step explanation:

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