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lawyer [7]
3 years ago
11

What is an acute angle?

Mathematics
2 answers:
PIT_PIT [208]3 years ago
5 0

Answer:

Different Angles have different names: An Acute Angle is less than 90°. This is an acute angle. All the angles below are acute angles: Also: the letter "A" has an acute angle. Remember to look carefully at which angle you are being asked to name: The acute angle is the small angle which is less than 90°.

mixer [17]3 years ago
3 0

Answer:

Less than 90°

Step-by-step explanation:

A acute angle is less than 90°

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Answer:

Step-by-step explanation:

Answer: A.) 2 <= X <= 6

B.) 13 < = X < = 39

Step-by-step explanation:

Given that a factory can work its employees no more than 6 days a week, that is, less than or equal to 6 days a week

And also, no less than 2 days per week. That is, greater than or equal to 2 day a week.

Let X represent the number of days an employee can work per week.

According to the first statement,

X < = 6

According to the second statement,

X >= 2

An inequality to represent the range of days an employee can work will be

2 < = X <= 6

To represent the range in hours, first convert the number of days to hour. Given that an employee can work

1 day = 6.5 hours

2 days = 2 × 6.5 = 13 hours

5 days = 6 × 6.5 = 39 hours

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Answer:

Decreasing the sample size decreases the width of the confidence interval.

Step-by-step explanation:

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\bar X\pm z_{0.05/2}\frac{s}{\sqrt{n}}\\\\\\=\bar X\pm 1.960\times\frac{s}{\sqrt{50}}\\\\\\=\bar X\pm 0.1960s

#we then calculate the confidence interval of sample size =50 and of similar mean and standard deviation:

\bar X\pm z\frac{s}{\sqrt{n}}\\\\\\=\bar X\pm z_{0.05/2}\times\frac{s}{\sqrt{n}}\\\\\\=\bar X\pm1.960\times \frac{s}{\sqrt{50}}\\\\\\\\=\bar X\pm0.2772s

#Notice that the smaller sample(n=50) has a narrower confidence interval.

Hence, decreasing the sample size decreases the width of the confidence interval.

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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