Jawaban:
B. 69°
Penjelasan dengan langkah-langkah:
2x + 5 + 3x + 15 = 180
5x + 20 = 180
5x = 180-20= 160
x = 160 : 5 = 32
sudut BAD = 2x + 5 = (2x32)+5 = 64+5= 69°
2x+5°+3x+15°=180°
5x+20°=180°
5x=180°-20°
5x=160°
x=32°
<BAD
2x+5°
2(32)+5°
64°+5°
69° (B)
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Jawaban:
B. 69°
Penjelasan dengan langkah-langkah:
2x + 5 + 3x + 15 = 180
5x + 20 = 180
5x = 180-20= 160
x = 160 : 5 = 32
sudut BAD = 2x + 5 = (2x32)+5 = 64+5= 69°
2x+5°+3x+15°=180°
5x+20°=180°
5x=180°-20°
5x=160°
x=32°
<BAD
2x+5°
2(32)+5°
64°+5°
69° (B)