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Kamila [148]
3 years ago
14

What is the length of the unknown leg in the right triangle? 22 32 104 194

Mathematics
1 answer:
Rus_ich [418]3 years ago
7 0

Answer:

Your answer would be B.

Step-by-step explanation:

a^2 + 9^2 = 113^2

Solve exponents.

A^2 + 81 = 113

Subtract 81 from each side.

A^2 = 32.

Square root each side.

A = 32

Hope this helps & good luck!

Feel free to message me if you need more help! :)

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During a rock concert, the noise level (in decibels) in front row seats has a mean of 95 dB with a standard deviation of 8 dB. W
lorasvet [3.4K]

Answer:

\frac{8}{9} *100= 88.89 \%

So we have at least 88.89% of the noise level values within 3 deviation from the mean.

Step-by-step explanation:

For this case let define the random variable X as the noise level, we know the following properties for X:

E(X) = 95 , Sd(X)= 8

And for this case we don't know the distribution for the random variable X.

But we can use the Chebysev theorem who states that the minimum percentage of the data that lies within k standard deviations from the mean is given by:

1 -\frac{1}{k^2}, k>1

So for this case we have that k = 3 and if we use this theorem we have:

1- \frac{1}{3^2}

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