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Mashcka [7]
2 years ago
12

The scale of a map is 1 cm: 77 km.

Mathematics
1 answer:
laiz [17]2 years ago
4 0

\bf \stackrel{map}{1~cm}\qquad :\qquad \stackrel{actual}{77~km}\qquad \cfrac{map}{actual}=\cfrac{1}{77}~\hfill \cfrac{\stackrel{map}{3}}{\underset{actual}{a}}=\cfrac{1}{77}\implies 231=a

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The upper quartile of a set of data is represented by which of the following?
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Answer:

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Step-by-step explanation:

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3x-y=-5<br><br>5x+7y=29<br><br>Solve this for me using substitution pls
pentagon [3]

Answer:

(- 3/13, 56/13)

Step-by-step explanation:

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If a bookshelf is 28 1/8 inches long,how many 1 7/8 inch thick books will it hold?
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The time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated b
storchak [24]

Answer:

A task time of 177.125s qualify individuals for such training.

Step-by-step explanation:

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Z = \frac{X - \mu}{\sigma}

After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X. Subtracting 1 by the pvalue, we This p-value is the probability that the value of the measure is greater than X.

In this problem, we have that:

A distribution that can be approximated by a normal distribution with a mean value of 145 sec and a standard deviation of 25 sec, so \mu = 145, \sigma = 25.

The fastest 10% are to be given advanced training. What task times qualify individuals for such training?

This is the value of X when Z has a pvalue of 0.90.

Z has a pvalue of 0.90 when it is between 1.28 and 1.29. So we want to find X when Z = 1.285.

So

Z = \frac{X - \mu}{\sigma}

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A task time of 177.125s qualify individuals for such training.

7 0
3 years ago
Use the figure below to find the value of y and each angle shown.
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5y - 16 + 3y + 20 = 180 degrees

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The angle opposite 5y - 16 also equals 94 because they are vertical angles.

The angle opposite of 3y + 20 also equals 86 because they are vertical angles

6 0
2 years ago
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