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Contact [7]
2 years ago
15

Large sailing ships have a lookout post, called a crow's-nest, on one of their masts. Why is the crow's-nest as high on a mast a

s possible.
Advanced Placement (AP)
1 answer:
FrozenT [24]2 years ago
8 0

Answer: To provide the best possible view

Explanation:

The crow's nest was located on the upper part of the main mast in a large sailing ship. It was so named because it is thought that Vikings used to carry crows in cages attached to the top of the mast and when they couldn't see anything they would let the crow out and follow its flight path.

It is located as high on the mast as possible so that it may provide the best possible view of what is ahead so that the ship can be able to navigate better. It was replaced by radar to a large extent.

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100 points what is a cool meaning for a race team the the initials are DTR
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Answer:

Explanation

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3 years ago
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If the wait time is less than 30 minutes for 75% of all patients in the emergency room, what is the probability that the
Greeley [361]

The probability that the proportion of patients who wait less than 30 minutes is 0.582 or less is 0.0020

<h3>What is probability? </h3>

Probability can be defined as the likelihood of an event to occur. In statistics, the mean of the sample distribution typically shows the probability of the population.

From the parameters given:

  • The sample size (n) = 55 patients
  • Let's assume that the mean (x) = 32 (i.e. 58.2%) of the patients

The sample proportion \mathbf{\hat p} can be computed by using the expression:

\mathbf{\hat p = \dfrac{x}{n}}

\mathbf{\hat p = \dfrac{32}{55}}

\mathbf{\hat p =0.582}

If the percentage of the probability of all patients in the emergency room = 0.75

The probability that the proportion of patients who wait less than 30 minutes is 0.582 or less can be computed as:

\mathbf{( \hat P \leq 0.582) = P \Big( \dfrac{\hat p - p}{\sqrt{\dfrac{p(1-p)}{n}}} \leq \dfrac{0.582 - 0.75}{\sqrt{\dfrac{0.75(1-0.75)}{55}}} \Big )}

\mathbf{( \hat P \leq 0.582 )= P \Big( Z \leq \dfrac{-0.168}{\sqrt{0.003409}} \Big )}

\mathbf{( \hat P \leq 0.582) = P \Big( Z \leq -2.88 \Big )}

From the Z distribution table:

\mathbf{( \hat P \leq 0.582) = 0.00198}

\mathbf{( \hat P \leq 0.582) \simeq 0.0020}

Learn more about probability here:

brainly.com/question/24756209

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2 years ago
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What was the first real dynasty of China? When did the dynastic period end and why?
Alex_Xolod [135]

shang dynasty

because the existence of the Xia dynasty is debated, the shang dynasty is sometimes seen as the first of chains dynasty.The shang rurals maintained control for about 600 years. The period of the rule saw the invention of Chinese writing and may later historians viewed it as china's 'Golden Age'. In 1046 B.C.E.

8 0
3 years ago
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Armon specializes in framed art. For a specific design of framed art, the width of the frame is 10 inches longer than the width
dlinn [17]

Answer: The answer is: f(x) = 2x^2 + 40x + 200

Explanation:

Given: x is the width of the Artwork

Let W be the Width of the Frame

Let L be the Length of the Frame

Width = x + 10

Length = Width * 2, so by substitution, Length = 2(x + 10)

Area = Width * Length

By substitution:

Area = (x + 10) * 2(x + 10)

f(x) = (x + 10) * (2x + 20)

f(x) = 2x^2 + 20x + 20x + 200

f(x) = 2x^2 + 40x + 200

To test this, if a picture 8" wide is put in this frame, the width would be 8+10 or 18 inches. The length would be twice the width, or 36 inches. The Area is 18 x 36 = 648.

Using the formula:

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f(8) = (2 * 64) + 320 + 200

f(8) = 128 + 320 + 200

f(8) = 648

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3 years ago
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D) Applying an equal force at a location farther away from the rock.
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