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Julli [10]
4 years ago
14

Can someone help me please!!!!

Mathematics
1 answer:
kirill115 [55]4 years ago
4 0
Given:
Right triangle DEF right-angled at F.
ED=97 (hypotenuse)
DF=72 (opposite side of angle E)
FE=65 (adjacent side of angle E)

Cosine of angle E
=(adjacent side)/(hypotenuse)
=FE/ED
=65/97
=0.6701   (to four decimal places)

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Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

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