Answer:
x = 30
Step-by-step explanation:
The sum of the 3 interior angles of a triangle = 180°, hence
x + x + 10 + 3x + 20 = 180
5x + 30 = 180 ( subtract 30 from both sides )
5x = 150 ( divide both sides by 5 )
12x⁴y⁴
3xy + 3xy + 3xy + 3xy = 12x⁴y⁴
360
6×10=60
60×6=360
10
Z ^2+11=111
Z ^2=100
Z=10
17°
73°= EGB
EGB+ x° = 90°
so x° = 90°-73° =17°
