Respuesta :

siya90258

Answer:

y is not mentioned in the question.

40°=(2z+10)°

40°-10=2z

30=2z

30/2=z

15=z

akposevictor

Using the definition of vertical angles, the value of z is: 15.

Vertical Angles Pair

The two pairs of opposite angles formed when two straight lines intersect are called vertical angles, and are therefore congruent to each other.

Thus:

2z + 10 = 40

2z = 40 - 10

2z = 30

z = 30/2

z = 15

Therefore, using the definition of vertical angles, the value of z is: 15.

Learn more about vertical angles on:

https://brainly.com/question/1673457

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