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Rasek [7]
3 years ago
11

Cho hai biến cố xung khắc và B, sao cho ( ≠ 0), ( ≠ 0). Hỏi A và B có độc lập không?

Mathematics
1 answer:
romanna [79]3 years ago
3 0

Answer:

Ta có:   P  ( A )  P  ( B )  =  0 , 12 . Vì  P  ( A B )  =  0 , 2  ≠  0 , 12  =  P  ( A )  P  ( B )

nên hai biến cố A và B không độc lập với nhau.

Step-by-step explanation:

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A company collected $7,800 by selling shoes. The company had $6,084 left after paying the tax. What was the percentage of tax?
dezoksy [38]

Answer:

22%

Step-by-step explanation:

The percentage of tax can be found by calculating the percent change.

new - old / old

6084 - 7800 / 7800

= -0.22 or -22%

This means the price decreased by 22%, meaning you paid 22% in taxes.

please click heart button to give thanks :)

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Liono4ka [1.6K]

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5 0
2 years ago
4) Dan had 199 dollars to spend on 7 books. After
IRINA_888 [86]

Answer:

The answer is that each book costs 26 dollars

Step-by-step explanation:

First we subtract 199 dollar from 7 =182

Then we divide 182 dollars to the seven book in order to find a unit =182/7=26

To prove this answer multiply 26 dollars than 7 books and see if the outcome is 182.Then subtract 199 from 182 and see if you got 17.

3 0
3 years ago
Select the correct answer.
Marina CMI [18]

The concept of historical cost in accounting involves valuing business resources at their purchase price. This is further explained below.

<h3>What is the historical cost?</h3>

Generally, historical cost is a value of measure used in accounting that records the value of an asset on the balance sheet at its original cost when purchased by the firm.

In conclusion, valuing business resources at their purchase price is what historical cost is about.

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brainly.com/question/10295065

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Why do we add the opposite when subtracting integers ?
katen-ka-za [31]
Neagtive means go backwards or oposite
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