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2 years ago

Why are Aristocrats important to China?

Mathematics

2 answers:

Blababa [14]2 years ago

7 0

Answer:

They are in control over the exporting good in the central expansion of the government.

Step-by-step explanation:

Hatshy [7]2 years ago

5 0

The aristocrats made up a very small portion of Chinese society and were often well-connected to the emperor. These aristocrats were generally landowners who collected rent from their tenants and, in turn, paid tribute to the emperor as a show of allegiance.

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Solve the following permutation. 6P3

victus00 [196]

Here, the answer is 120

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3 years ago

A car dealership sells 0, 1, or 2 luxury cars on any day. When selling a car, the dealer also tries to persuade the customer to

melisa1 [442]

Answer:

Mean = 1.42

Variance = 0.58

Step-by-step explanation:

Given: X denote the number of luxury cars sold in a given day, and Y denote the number of extended warranties sold.

Also, joint probability function of X and Y are given.

To find:

mean and variance of X

Solution:

From the given joint probability function of X and Y,

$P(X=0)=\frac{1}{6}\\P(X=1)=\frac{1}{12}+\frac{1}{6}=\frac{1+2}{12}=\frac{3}{12}\\P(X=2)=\frac{1}{12}+\frac{1}{3}+\frac{1}{6}=\frac{1+4+2}{12}=\frac{7}{12}$

Mean of X:

$E(X)=\sum XP(X)\\=0\left ( \frac{1}{6} \right )+1\left ( \frac{3}{12} \right )+2\left ( \frac{7}{12} \right )\\=0+\frac{3}{12}+\frac{14}{12}\\=\frac{17}{12}=1.42$

Variance of X:

$E(X^2)=\sum X^2P(X)\\=0^2\left ( \frac{1}{6} \right )+1^2\left ( \frac{3}{12} \right )+2^2\left ( \frac{7}{12} \right )\\=0+\frac{3}{12}+\frac{28}{12}\\=\frac{31}{12}$

$var(X)=E\left [ X^2 \right ]-\left ( E\left [ X \right ] \right )^2\\=\frac{31}{12}-\left ( \frac{17}{12} \right )^2\\=\frac{31}{12}-\frac{289}{144}\\=\frac{372-289}{144}\\=\frac{83}{144}\\=0.58$

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3 years ago

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Ludmilka [50]

Answer:

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Step-by-step explanation:

5x+7y=10

5x-10=10-7y-10

5x-10=-7y

(1/7)5x-10=7y(1/7)

5x/35-10/70=y

7x-7=y

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3 years ago

Prove the sum of two rational numbers is rational where a, b, c, and d are integers and b and d cannot be zero.

timama [110]

Answer:

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Step-by-step explanation:

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2 years ago

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Tatiana [17]

Answer:

Step-by-step explanation:

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2 years ago

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