milkshakegrande101
24.06.2019 •
Mathematics
If x and y are 2 sets such that n(x) is 17, n(y) is 23, n(xuy) is 38, find x intersection y
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Ответ:
n (x intersect y) = 2.
Step-by-step explanation:
I think you mean n ( x intersect y).
n(x) + n(y) = 17 + 23 = 40.
But n(x U y) = 38 so 40 - 38 = 2 elements are common to set x and set y.
Therefore n (x ∩ y) = 2.
Ответ:
2 m + 4.9 m
6.9 m
7 m
The answer is 7m