Mercedes12152002
25.02.2021 •
Mathematics
How many liters of a 50% acid solution must be mixed with a 30% acid solution to get 120 L of a 40% acid solution?
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Ответ:
10,648
Step-by-step explanation:
The total number of residents is 24,200.
The probability that a resident is from the central region is 0.44.
To find the number of residents in the central region, we multiply the corresponding probability by the total number of residents.
The number of people who live in the central region is