23emazour 23emazour

23-11-2020
Mathematics

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what is the answer?

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Respuesta :

23-11-2020

Answer:

4

Step-by-step explanation:

a triangle has angles that add up to 180°

an equilateral triangle has equal angles

so each angle is 60° (because 180/3 is 60)

so 10x +20 = 60

10x = 40

x = 4

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