mandyO1
11.05.2021 •
Mathematics
A box contains 20balls,x of which are white.if the probability of selecting a non white ball at random is 3/5.find the value of x
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Ответ:
8
Step-by-step explanation:
So there are 20 balls.
3/5 of them are NOT white.
This means 2/5 of them ARE white.
So knowing this, lets find the number of white balls(x).
To do this, lets multiply the 20 total balls by the 2/5 of them that are white:
20/1*2/5
=
40/5
=
8
So we know that 8 of the balls are white!
Hope this helps! :)
Ответ:
(i dont know number 2)