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masonroe0
18.04.2021 •
Mathematics
What is the area of the triangle?
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Ответ:
30 units²
Step-by-step explanation:
a=1/2 ×length × width
a=1/2 × 12 ×5
a=6×5
a=30units squared
Ответ:
50 - 42 8
z = = = 1
8 8
One way to answer this is to determine the area under the normal curve to the LEFT of z=1, and then subtract that area from 1.00.
Important fact: 68% of data values are found within 1 std. dev. of the mean; this means that 34% of data values are found between 0 and 1 std. dev.
Adding together the area under the normal curve to the left of z=0 (which is 0.50) and this 0.34 results in 0.84. 84% of students earned scores of less than 50. (100%-84%) of the students earned scores of greater than 50.
Thus, 16% passed, 84% failed.