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Sphinxa [80]
2 years ago
13

2x + 7 = 27 or 3 + 3x = 30

Mathematics
1 answer:
Leokris [45]2 years ago
5 0

Step-by-step explanation:

2x + 7 = 27 OR 3 + 3x = 30.

2x = 27 - 7 OR 3x = 30 - 3

2x = 20 OR 3x = 27

x = 20/2 OR x = 27/3

x = 10 OR x = 9

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Answer:

See explanation

Step-by-step explanation:

Required

The average

The data whose average is to be calculated are not given.

However, the formula to calculate the average is:

\bar x = \frac{\sum x}{n}

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This means that the number of schools is 4

So:

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4 0
3 years ago
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vampirchik [111]
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Step-by-step explanation:

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