imlexi12393
30.05.2021 •
Mathematics
Help me pls
_units^2
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Ответ:
108 un²
Step-by-step explanation:
Area trapezoid = 1/2(Base 1 +Base 2) * height
1/2(9) * 24
9 * 12 = 108
108 un²
If my answer is incorrect, pls correct me!
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-Chetan K
Ответ:
The empirical rule states that approximately 68% of a normal distribution falls within one standard deviation of the mean, or . This means, by symmetry of the distribution, that
Now, since the distribution is symmetric about the mean, you have .
So,
More precisely, this probability is around .