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Stolb23 [73]
3 years ago
6

Collins Middle School has 224 sixth grade students. If the sixth grade is 35% of the total school, how many students are in the

middle school?
Mathematics
1 answer:
Likurg_2 [28]3 years ago
4 0

There are 640 students in the middle school.

Step-by-step explanation:

Given,

Number of sixth grade students = 224

Percent of sixth grade students = 35%

Let,

x represent the total number of students in school.

35% of x = 224

\frac{35}{100}*x=224\\0.35x=224

Dividing both sides by 0.35

\frac{0.35x}{0.35}=\frac{224}{0.35}\\x=640

There are 640 students in the middle school.

Keywords: percentage, division

Learn more about division at:

  • brainly.com/question/11223427
  • brainly.com/question/11229113

#LearnwithBrainly

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Using Chebyshev's Theorem, considering a standard deviation of 40, we have that at least 75% of the students scored between 360 and 520.

<h3>What does Chebyshev’s Theorem state?</h3>

When we have no information about the population distribution, Chebyshev's Theorem is used. It states that:

  • At least 75% of the measures are within 2 standard deviations of the mean.
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In this problem, considering a standard deviation of 40, we have that:

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Within 2 standard deviations of the mean, no information about the distribution, hence, at least 75% of the students scored between 360 and 520.

More can be learned about Chebyshev's Theorem at brainly.com/question/25303620

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