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Marrrta [24]
3 years ago
15

An experiment involves drawing a card from a standard deck, recording its color, and returning it to the deck. The experiment wa

s performed 50 times, and the results are shown in the following frequency table.
Color Frequency

red 22

black 28


What is the experimental probability of drawing a red card?
Mathematics
1 answer:
velikii [3]3 years ago
4 0

Answer:

0.44

Step-by-step explanation:

22 divided by 50

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tresset_1 [31]

Answer:

For a triangle with <em>a</em> = 33, <em>c</em> = 48 and the angle \alpha=33^o, the missing side is <em>b = </em>60.4, and the missing angles are \beta=94.6^oand \gamma = 52.4^o.

Step-by-step explanation:

The Law of Sines says that in any given triangle, the ratio of any side length to the sine of its opposite angle is the same for all three sides of the triangle. This is true for any triangle, not just right triangles.

                                            \frac{\sin\alpha}{a} = \frac{\cos\beta}{b} = \frac{cos\gamma}{c}

We know two sides <em>a</em> = 33, <em>c</em> = 48 and the angle \alpha=33^o, so we use the law of sines to find the angle \gamma as follows:

\frac{ 33 }{ \sin(33^o) } =\frac{ 48 }{ \sin(\gamma) }\\\\\sin(\gamma) \cdot 33 = 48 \cdot \sin(33^o)\\\sin(\gamma) \cdot 33 = 48 \cdot 0.5446\\\sin(\gamma) \cdot 33 = 26.1427\\\sin( \gamma ) = 0.7922\\\gamma = 52.4^o

One of the basic properties of triangles is that the sum of the measure of angles, in every triangle, is 180°.

So,

180=\alpha+\beta+\gamma\\180=33+\beta+52.4\\\beta+85.4=180\\\beta=94.6^o

To find the side <em>b</em> we use the law of sines:

\frac{ 33 }{ \sin(33^o) } =\frac{ b }{ \sin(94.6^o) }\\\\b=\frac{33\sin \left(94.6^{\circ \:}\right)}{\sin \left(33^{\circ \:}\right)}\\\\b=60.4

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Answer:

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Step-by-step explanation:

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