3 years ago

Determine if the statement is always, sometimes, or never true. An exterior angle of a triangle is 180 degrees.

Mathematics

2 answers:

Marizza181 [45]3 years ago

5 0

An angle of 180° is flat, so it can't be an exterior angle of a triangle.
your answer is:
never true

julsineya [31]3 years ago

4 0

Answer:

The correct answer among the choices is Never.

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Step-by-step explanation:

We have to construct a 99% confidence interval for the mean.

A sample of n=7 males is taken. We know the sample mean = 315 watts and the sample standard deviation = 16 watts.

For a 99% confidence interval, the value of z is z=2.58.

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$M-z\sigma/\sqrt{n}\leq\mu\leq M+z\sigma/\sqrt{n}\\\\315-2.58*16/\sqrt{7}\leq\mu\leq 315+2.58*16/\sqrt{7}\\\\315-15.6\leq \mu\leq 315+15.6\\\\299.4\leq\mu\leq 330.6$

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olga2289 [7]

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Step-by-step explanation:

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