edithlera2000 edithlera2000

03-08-2021
Mathematics

contestada

Find the value of x.
A.124
B.57
C.72
D.90

Find the value of x A124 B57 C72 D90 class=

Respuesta :

sqdancefan sqdancefan

03-08-2021

9514 1404 393

Answer:

x = 90°

Step-by-step explanation:

Half the sum of x and 120° is the angle where the chords cross, 105°. Then ...

105° = (1/2)(x +120°)

210° = x + 120°

210° -120° = x = 90°

_____

Additional comment

z is the arc that finishes the circle: 360° -90° -68° -120° = 82°.

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