39013613 39013613
  • 15-03-2021
  • Mathematics
contestada

Find the value of x.

What theorems would/could you use to find x?

Thank you in advance

Find the value of x What theorems wouldcould you use to find x Thank you in advance class=

Respuesta :

akposevictor
akposevictor akposevictor
  • 20-03-2021

Answer:

a. Linear pair theorem

b. x = 40

Step-by-step explanation:

a. x° and (4x - 20)° are angles on a straight line, so, they are a linear pair. Therefore, we would apply the linear pair theorem, which says the sum of a linear pair gives us 180°.

b. x° + (4x - 20)° = 180° (linear pair theorem)

Solve for x

x + 4x - 20 = 180

5x - 20 + 20 = 180 + 20

5x = 200

5x/5 = 200/5

x = 40

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