Respuesta :

Answer:

1. Since the angles on the both sides are the same

5x = 100

x = 20

The mistake is that it is absolutely unnecessary to use 180.

2. It is a right angle, which means it would be 90 degrees instead of 180.

3x + 39 = 90

3x + 39 - 39 = 90 - 39

3x = 51

3x = 17

3. The process is wrong

It should be

6x + 2x + 8 = 180

8x + 8 = 180

8x = 172

x = 21.5

Chocolate64

Answer:

1) Mistake is that vertical angles are congruent and equal meaning the product of 5x should be equal to the other side being 100. Answer is x=20

2) Mistake is that the angle's measure should've added up to 90. Answer is x=17

3) The math is done incorrectly with the first step as the coefficients can't be added with constants. Answer is x=21.5

Step-by-step explanation:

The following image is written proof

Ver imagen Chocolate64

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