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Andreyy89
3 years ago
13

A sprinkler sprays over a distance of 40 feet and rotates through an angle of 80. Find the area watered by the sprinkler.

Mathematics
1 answer:
il63 [147K]3 years ago
7 0

Answer:

1,115.8937105551

Step-by-step explanation:

[ π x 40² ] =5,026.5482457437

[ 80 / 360 ] ft² =[,222] ft²

5,026.5482457437 X [,222] ft²= 1,115.8937105551 ft² 

A = [ π x 40² ] [ 80 / 360 ] ft² 

A = 1,115.8937105551 ft²

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Answer:

please give me a brainless 0

Inequality :

α1+(n−1)a−(⌊n÷m⌋×(a−b))≥x

The following is as far as I get:

α1+(n−1)a−(⌊n÷m⌋×(a−b))≥x

(n−1)a−(⌊n÷m⌋×(a−b))≥x−α1

n−1−(⌊n÷m⌋×(a−b))≥x−α1a

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3 years ago
Solve each equation and check.show all work. ​
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What's the value of x and y?​
krok68 [10]

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Step-by-step explanation:

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<x = 45 degree

<z + <x + <y = 180

45 + 45+ <y = 180

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Read 2 more answers
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
Radda [10]

Answer:

68%

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.

95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ.

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

μ - xσ

53 = 61 - 8x

8x = 61 - 53

8x = 8

x = 8/8

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For x = 69

μ + xσ

69 = 61 + 8x

8x = 69 - 61

8x = 8

x = 8/8

x = 1

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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13h and 5min. Hope this helps:)

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