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sasho [114]
3 years ago
13

HELP ASAP Less than 30 seconds please

Mathematics
2 answers:
Talja [164]3 years ago
8 0

Answer:

B

Step-by-step explanation:

alexdok [17]3 years ago
6 0

Answer:

B

Step-by-step explanation:

Do the pythorgeam theorem.

12^2+6^2=...

144+36=180

square root of 180=B

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.2

Step-by-step explanation:

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Wait what do you mean?

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What percent of all voters are registered Democrats? Round your answer to the nearest tenth of a percent. Type a numerical answe
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Answer:

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Hope this helps :)

8 0
3 years ago
The time it takes to completely tune an engine of an automobile follows an exponential distribution with a mean of 40 minutes.
Mazyrski [523]

Answer: a. P (x<30) = 0.5276

              b. P (30<x<35) = 0.0555

Step-by-step explanation: An <u>exponential</u> <u>distribution</u> is a distribution of time in which events happens at a constant average rate.

The rate is calculated as

\lambda=\frac{1}{\mu}

with μ as the mean.

The probability density distribution for this type of distribution is

f(x)=\lambda e^{-\lambda x}

And probability is calculated as

P(X

For tuning of an engine, the rate is

\lambda=\frac{1}{40}

λ = 0.025

a. Probability of less than 30 minutes:

P(X

P(X

P (X < 30) = 0.5276

<u>Probability of tuning in 30 minutes or less is </u><u>52.76%</u><u>.</u>

<u />

b. Probability of between 30 and 35 can be described as

P(30

P(X

P(X

P (X < 35) = 0.5831

P (X < 30) = 0.5276

Then:

P(30

P (30 < X < 35) = 0.0555

<u>Probability of tuning an engine between 30 and 35 minutes is </u><u>5.55%.</u>

<u />

<u />

5 0
3 years ago
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