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Ad libitum [116K]
3 years ago
12

PLEASE HELP mathematics

Mathematics
2 answers:
AlexFokin [52]3 years ago
8 0

Answer:

21+10.5 which would equal 31.5

Step-by-step explanation:

Alik [6]3 years ago
5 0

Answer:

21+10.5 which would equal 31.5

Step-by-step explanation:

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The table above shows four numeric expressions. Which expression is an integer when it's evaluated?
Gre4nikov [31]

Answer: H

Step-by-step explanation:

9(-3)=-27, which is an integer.

8 0
2 years ago
Es The measure of an interior angle of a regular polygon is 120°. What is the measurb of each exterior angle? The polygon has
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
  • The measure of each interior angle = \frac{(n-2)*180}{n}
  • The measure of each exterior angle = \frac{360}{n}
  • The sum of interior angle and exterior angle at a vertex is 180°

∵ 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

∴ 60 n = 360

- 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

5 0
3 years ago
Martina filled a 100mL container Simone filled a 1.2 liter container how much more water does Simone have than Martina
fomenos

Answer:

divide 100 ml and 1.2 liter

Step-by-step explanation:


You will get the answer in percent


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3 years ago
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Step-by-step explanation:

5 0
3 years ago
6a^2-[-5a-(9a^2-3a)]-[8+(-19a-8)]
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The answer is 15a^2+21a
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3 years ago
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