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2 years ago

11

Can somebody help me please:(!

2 answers:

dlinn [17]2 years ago

7 0

The greatest number is 28 people

UkoKoshka [18]2 years ago

7 0

Step-by-step explanation:

the greatest number of people that can sit on Seven tables is 28 it's seven tables times before people I just couldn't find you to tell you quick enough all you had to do is multiply 7 of those tables by four people sorry I didn't get to you quick enough someone else did

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2 × pi × radius

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(A) Write an expression for a number that is five <br> times greater than two

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5x+2 because you have to multiply 5 by x and then add two

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3 years ago

According to geologists, the San Francisco Bay Area experiences five earthquakes with a magnitude of 6.5 or greater every 100 ye

sveta [45]

Answer:

13.53% probability that no earthquakes with a magnitude of 6.5 or greater strike the San Francisco Bay Area in the next 40 years

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

$e = 2.71828$ is the Euler number

$\mu$ is the mean in the given time interval.

According to geologists, the San Francisco Bay Area experiences five earthquakes with a magnitude of 6.5 or greater every 100 years.

One earthquake each 100/5 = 20 years.

What is the probability that no earthquakes with a magnitude of 6.5 or greater strike the San Francisco Bay Area in the next 40 years?

40 years, so $\mu = 40/20 = 2$

This probability is P(X = 0).

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

$P(X = 0) = \frac{e^{-2}*2^{0}}{(0)!} = 0.1353$

13.53% probability that no earthquakes with a magnitude of 6.5 or greater strike the San Francisco Bay Area in the next 40 years

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2 years ago

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Answer:

86

Step-by-step explanation:

9x4=36

40+46=86

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2 years ago