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2 years ago

How to subtract fractionslike this

Mathematics

2 answers:

omeli [17]2 years ago

7 0

Your answe would be 1 9/13

Dimas [21]2 years ago

3 0

Your answer would be 19/13

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Define democracy?Write any four key elements of democracy. Easy answer required.

umka21 [38]

Democracy: a system of government by the whole population or eligible members of state, typically through elected representatives

elements:
- equality
- accountability
- rule of law
- transparency

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2 years ago

51. Find the length of the unknown side x of this triangle, evaluate your answer to two decimal places.

KiRa [710]

Answer:

x=6

Step-by-step explanation:

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2 years ago

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4x-3(x + 5) > 7-4(x + 6)

I am Lyosha [343]

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2 years ago

Find decimal notation. 0.8%

ipn [44]

To convert a percent to a decimal, divide the percent by 100.

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2 years ago

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The number and frequency of Atlantic hurricanes annually from 1940 through 2007 is shown here:

klio [65]

Answer:

The probability table is shown below.

A Poisson distribution can be used to approximate the model of the number of hurricanes each season.

Step-by-step explanation:

(a)

The formula to compute the probability of an event E is:

$P(E)=\frac{Favorable\ no.\ of\ frequencies}{Total\ NO.\ of\ frequencies}$

Use this formula to compute the probabilities of 0 - 8 hurricanes each season.

The table for the probabilities is shown below.

(b)

Compute the mean number of hurricanes per season as follows:

$E(X)=\frac{\sum x f_{x}}{\sum f_{x}}=\frac{176}{68}= 2.5882\approx2.59$

If the variable X follows a Poisson distribution with parameter λ = 7.56 then the probability function is:

$P(X=x)=\frac{e^{-2.59}(2.59)^{x}}{x!} ;\ x=0, 1, 2,...$

Compute the probability of X = 0 as follows:

$P(X=0)=\frac{e^{-2.59}(2.59)^{0}}{0!} =\frac{0.075\times1}{1}=0.075$

Compute the probability of X = 1 as follows:

$\neq P(X=1)=\frac{e^{-2.59}(2.59)^{1}}{1!} =\frac{0.075\times7.56}{1}=0.1943$

Compute the probabilities for the rest of the values of X in the similar way.

The probabilities are shown in the table.

On comparing the two probability tables, it can be seen that the Poisson distribution can be used to approximate the distribution of the number of hurricanes each season. This is because for every value of X the Poisson probability is approximately equal to the empirical probability.

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2 years ago