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arthurcasella
22.04.2020 •
Mathematics
The circumference of a circle is 18 m. Find its diameter, in meters.
quick answers please
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Ответ:
5.72957795131
Step-by-step explanation:
18/pi
Ответ:
A. 6
A. 4.3%
Step-by-step explanation:
The total number of singers = 4
To choose singers = 2
The number of ways to choose 2 singers from 4=![^4C_2=\frac{4!}{2!(4-2)!}=3\times2=6](/tpl/images/0262/7623/0ca38.png)
Hence, A is the right option.
The total number of water purifiers T= 280
The number of defective purifiers D= 12
The probability that a water purifier chosen at random will be defective (in percent)=![\frac{\text{T}}{\text{D}}\times100](/tpl/images/0262/7623/9594c.png)
Hence, A is the right option.