tolong jawab ya no 5

Sudut AOB = 5x + 30°
Sudut BOC = 2x + 10°

Sudut AOC = 180° ( garis lurus)

Maka :

sudut AOB + sudut BOC = sudut AOC
5x + 30 + 2x + 10 = 180
7x + 40 = 180
7x = 180 - 40
7x = 140
x = 140/7
x = 20 °


Maka
Sudut AOB :
= 5x + 30
= 5(20) + 30
= 100 + 30
= 130°

Sudut BOC :
= 2x + 10
= 2(20) + 10
= 40 + 10
= 50°


semoga membantu.. ✔