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Vika [28.1K]
3 years ago
9

Why is 7.8 an irrational number?

Mathematics
2 answers:
andreyandreev [35.5K]3 years ago
6 0
Its 78/10 = 39/5
Hope it helps :)
Nesterboy [21]3 years ago
6 0

Answer: It is a rational number

Step-by-step explanation:

any number that can be written in the form of fraction is rational number (or as   the a decimal that has a end or repeating decimal are rational number)

7.8=39/5

Hope this helps!! :)

Please let me know if you have any question

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3 years ago
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Ksenya-84 [330]

The answer to the question is 25t+26

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Troyanec [42]

The measure of each exterior angle is 60° and the polygon has 6 sides ⇒ 4th answer

Step-by-step explanation:

In a regular n-side polygon:

  • All sides are equal in lengths
  • All angles are equal in measure
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  • The measure of each exterior angle = \frac{360}{n}
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∵ The measure of an interior angle of a regular polygon is 120°

∵ The sum of interior angle and exterior angle at a vertex = 180°

∴ The measure of each exterior angle = 180 - 120

∴ The measure of each exterior angle = 60°

∵ The measure of each exterior angle = \frac{360}{n}

- Substitute the measure of the exterior angle by 60

∴ 60=\frac{360}{n}

- By using cross multiplication

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- Divide both sides by 60

∴ n = 6

∴ The polygon has 6 sides

The measure of each exterior angle is 60° and the polygon has 6 sides

Learn more:

You can learn more about polygons in brainly.com/question/6281564

#LearnwithBrainly

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Step-by-step explanation:

<h3>Hope it helps you !!!</h3>
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Your answer is C. Hope this help :D
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