2 years ago

PLEASE HELP DONT SKIP Find the missing side marked "?"

Mathematics

1 answer:

sladkih [1.3K]2 years ago

5 0

Answer:

Step-by-step explanation:

sin (55)/a = sin(20)/10

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I'm not sure about the others, but I hope that helps!

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2 years ago

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Mnenie [13.5K]

Answer:

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Step-by-step explanation:

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2 years ago

Appreciate answers and any help!

Savatey [412]

To find the expected value of the distribution, we multiply each outcome by it's probability. Doing this, we get that the expected value of defects on a skateboard is of $\frac{4}{25}$ .

Outcomes and probabilities:

0 defects, 9/10 probability

1 defect, 1/20 probability

2 defects, 1/25 probability

3 defects, 1/100 probability.

Expected value:

$E(X) = 0\frac{9}{10} + \frac{1}{20} + 2\frac{1}{25} + 3\frac{1}{100} = \frac{1}{20} + \frac{2}{25} + \frac{3}{100} = \frac{5 + 8 + 3}{100} = \frac{16}{100}$

Dividing both numerator and denominator by 4:

$\frac{4}{25}$

Thus, the expected value of defects on a skateboard is of $\frac{4}{25}$ .

A similar problem is given at: brainly.com/question/23156292.

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2 years ago