zykia1002
29.08.2019 •
Mathematics
If the sum of a number and 4 are doubled the result is two less than the number what's the number
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Ответ:
-2 + 4 = 2
2 is 2 less than 4
Ответ:
Step-by-step:
The first flip numbers will always add up to 1 so you do
1 - 2/7= 5/7
now it gets easy...
The second flip head will be 2/7 because it is a biased dice and the second flip tail will be 5/7
This also applies for the bottom 2: 2/7 head, 5/7 tails
hope this helped :)