Cho tập hợp A= { x= n² + 2 + 7 / n thuộc Z, -2 < n ≤ 3 } . Hãy viết tập hơp
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Answer:
The correct answer is 25.2 in.
Step-by-step explanation:
It is given that number line goes from 0 to 60 which can be used to represent a ribbon of length = 60 inches.
2 inches of the ribbon are frayed so actual length = 58 inches
Please refer to the attached image for the ribbon.
A is at 0
C is at 60
B is at 2
P is the point to divide the remaining ribbon in the ratio 2:3.
Part AB of the ribbon is frayed.
BP: PC = 2:3
Let BP = 2 and PC = 3
Now, BP + PC = BC = 58 = 2 + 3
= 5
So,
BP =
Location of the Cut = 2 + 23.2 = <em>25.2 inches</em>
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Alternatively, we can use the formula directly:
m: n is the ratio 2:3
