josiahevans6
josiahevans6 josiahevans6
  • 25-03-2021
  • Mathematics
contestada

HELP ME PLEASEE ASAP!!!! PLEASEE

HELP ME PLEASEE ASAP PLEASEE class=

Respuesta :

Cleverguy
Cleverguy Cleverguy
  • 25-03-2021

Answer:

25

Step-by-step explanation:

So there is this property,

Sum of two angle of triangle = exterior angle

So based on this we can form an algebraic equation (NOTE: this is an equilateral triangle so all the sides are 60°)

[tex]4x + 20 = 60 + 60 \\ 4x = 120 - 20 \\ 4x = 100 \\ x = \frac{100}{4} \\ x = 25[/tex]

So it's option B.

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