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defon
3 years ago
7

Find the value of x.

Mathematics
1 answer:
andrew11 [14]3 years ago
5 0

Answer:

50

Step-by-step explanation:

The upper left hand arc is also 130

The lower right hand arc is also x

A circle all the way around from some starting point is 360 degrees.

x + x + 130 + 130 = 360            Equation. Combine like terms.

2x + 260 = 360                         Subtract 260 from both sides

2x = 360 - 260                    

2x = 100                                    Divide by 2

x = 100/2

x = 50

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In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-s
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Answer:

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Step-by-step explanation:

The Standard Deviation Rule = Empirical rule formula states that:

68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ.

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99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ.

From the question,

Step 1

We have to find the number of Standard deviation from the mean. This is represented as x in the formula

μ = Mean = 61

σ = Standard Deviation = 8

For x = 53

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8x = 8

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For x = 69

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This falls within 1 standard deviation of the mean where: 68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ.

Therefore, according to the Standard Deviation Rule, the approximate percentage of daily phone calls numbering between 53 and 69 is 68%

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2 years ago
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The height of the triangular pyramid will be equal to H=12 feet.

<h3>What is a triangular pyramid?</h3>

A triangular pyramid is a pyramid having triangular faces the other sides of the pyramid are simliar triangles.

It is given that:-

The Volume of the pyramid=80 cubic meters

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Hence the height of the triangular pyramid will be equal to H=12 feet.

To know more about pyramid foliow

brainly.com/question/218706

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