cbrewer37
25.11.2021 •
Mathematics
There are only red sweets and yellow sweets in a bag.
There are n red sweets in the bag.
There are 8 yellow sweets in the bag.
Sajid is going to take at random a sweet from the bag and eat it.
He says
that the probability that the sweet will be red is
7
10
7
(a) Show why the probability cannot be
10
Solved
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Ответ:
Step-by-step explanation:
Red = n
Yellow = 8
Total = n+8
P(Red sweets) = n/n+8
7/10=n/n+8
10n=7n+56
10n-7n=56
3n=56
n=56/3=18.66666
Sweets cannot be a decimal number. It should be a whole number so it cannot be 7/10
Ответ: