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Nuetrik [128]
3 years ago
15

(9b +9) + (4n - 4) + (6d + 2) = Pleaseee help hurry

Mathematics
2 answers:
guajiro [1.7K]3 years ago
4 0
Answer
4n+6d+9b+7

Explanation
Subtract 4 from 9 to get 5
Add 5 and 2 to get 7
ANTONII [103]3 years ago
3 0

Answer: 9b+4n+6d+7

Step-by-step explanation:

1. 9b+9+4n−4+6d+2

2. 9b+4n+6d+(9-4+2)

3. 9b+4n+6d+7

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Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.5
iris [78.8K]

Answer:

By the Empirical Rule, 99.7% of the students have grade point averages that are between 1.28 and 3.8.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed(bell-shaped) random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 2.54

Standard deviation = 0.42.

Between 1.28 and 3.8?

1.28 = 2.54 - 3*0.42

So 1.28 is 3 standard deviations below the mean

3.8 = 2.54 + 3*0.42

So 3.8 is 3 standard deviations above the mean

By the Empirical Rule, 99.7% of the students have grade point averages that are between 1.28 and 3.8.

5 0
3 years ago
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Leto [7]

Answer:

No idea

Step-by-step explanation:

4 0
3 years ago
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An amusement park sells 5 bottles of water for every
77julia77 [94]

Answer:

8 bottles of juice

3 0
3 years ago
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Bob has 10 dollars. His parents took away 5 dollars because he did not do his chores. Then he got 25 more dollars from a friend.
Sauron [17]

Answer:

$30

Step-by-step explanation:

He first has 10 dollars. Then 5 is taken off.

So, 10-5=5

His friend gives him 25 more dollars

So, 25+5= 30

Hope this helped!

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3 years ago
If a number id divided by eleven, the solution is two-fifths. What is the number
miss Akunina [59]
The answer is 4 and four-fifths.
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