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2 years ago

Classify the triangle by its angles.

Mathematics

2 answers:

dedylja [7]2 years ago

7 0

Answer:

29°: Acute 90°: Right 61°: Acute

Step-by-step explanation:

If an angle is less than 90 degrees, it is acute. If it is greater than 90 degrees, it is obtuse. If it is exactly 90 degrees, it is right.

kvasek [131]2 years ago

3 0

Answer: Right triangle

Step-by-step explanation: One angle is 90 degrees, a right triangle is 90 degrees, so this is a right triangle.

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Answer:

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Step-by-step explanation:

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A random sample is selected from a population with mean μ = 100 and standard deviation σ = 10. Determine the mean and standard d

Scilla [17]

Answer:

a) $\mu = 100, s = 3.015$

b) $\mu = 100, s = 2.425$

c) $\mu = 100, s = 1.581$

d) $\mu = 100, s = 1.348$

e) $\mu = 100, s = 0.477$

f) $\mu = 100, s = 0.953$

Step-by-step explanation:

The mean is the same no matter the size of the sample.

The standard deviation of the sample is the standard deviation of population divided by the square root of the length of the sample.

So:

(a) n = 11

$\mu = 100$

$s = \frac{10}{\sqrt{11}} = 3.015$

(a) n = 17

$\mu = 100$

$s = \frac{10}{\sqrt{17}} = 2.425$

(c) n = 40

$\mu = 100$

$s = \frac{10}{\sqrt{40}} = 1.581$

(d) n = 55

$\mu = 100$

$s = \frac{10}{\sqrt{55}} = 1.348$

(e) n = 440

$\mu = 100$

$s = \frac{10}{\sqrt{440}} = 0.477$

(f) n = 110

$\mu = 100$

$s = \frac{10}{\sqrt{110}} = 0.953$

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Answer:

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Step-by-step explanation:

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