brybry26 brybry26
  • 25-09-2019
  • Mathematics
contestada

following diagram find the missing measure.
m 21 =3x, m
2 = 4x, m
3 = 2x, find x.

A.10
B.20
C.30
D.40

Respuesta :

TaeKwonDoIsDead
TaeKwonDoIsDead TaeKwonDoIsDead
  • 08-10-2019

Answer:

B

Step-by-step explanation:

The diagram basically shows three angles that make up a straight line.

We know the angle of a straight line is  180°.

Since there are three angles, Angle 1, Angle 2, and Angle 3 that make up a straight line, we can write:

Angle 1 + Angle 2 + Angle 3 = 180

3x + 4x + 2x = 180

9x = 180

x = 180/9

x = 20

The correct answer is B

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