Jawaban:
B. 124°
Penjelasan dengan langkah-langkah:
AOB = 2x°
BOC = (3x + 40)°
AOB + BOC = 180°
2x° + (3x + 40)° = 180°
5x = 180 - 40
5x = 140
x = 140 / 5
x = 28°
BOC = 3(28) + 40
BOC = 84 + 40
BOC = 124° (B)
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Jawaban:
B. 124°
Penjelasan dengan langkah-langkah:
AOB = 2x°
BOC = (3x + 40)°
AOB + BOC = 180°
2x° + (3x + 40)° = 180°
5x = 180 - 40
5x = 140
x = 140 / 5
x = 28°
BOC = (3x + 40)°
BOC = 3(28) + 40
BOC = 84 + 40
BOC = 124° (B)