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gungamer720
27.09.2020 •
Mathematics
Drag numbers into the blanks to show that f(x) = x - 2x + 5 has exactly 2 roots in the set of complex numbers by completing the square.
x² - 2x+5=0
2-2x =
x² - 2x+
(x - 1)2 =
(x - 1) = +
Therefore, there are two roots of f(x), x =
and x =
-5
-4
-3
-2
- 1
0
1
2
3
4
5
21
1 + 2
1 -2i
-1 + 2i
-1-2i
Solved
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Ответ:
The range of the given whisker box plot is 64-45=19.The percent of the village women took between 48 and 56 minutes to collect one container of water lie in the middle box.The middle “box” represents the middle 50% of scores for the group .The middle 50% of scores fall within the inter-quartile range.The upper and lower whiskers represent scores outside the middle 50%.
About 50% of the village women took between 48 and 56 minutes to collect one container of water.