Question

✨quiss, gyuss dah lama gk bikin kuis sorry yaa✨

Answer 1

Jawaban:

B. 123°

Penjelasan dengan langkah-langkah:

6x+9+4x-19= 180

10x-10= 180

10x= 190

x= 19

ABD

= 6(19)+9

= 114+9

= 123

Answer 2

Jawaban:

Penyelesaian :

∠ABD + ∠CBD = 180°

(6x + +9)° + (4x -19)° = 180°

6x + 4x + -19° + 9° = 180°

10x + -10° = 180°

10x = 180° - (-10°)

10x = 180° + 10°

10x = 190°

x = 190/10

x = 19

Besar sudut ∠ABD = (6x + 9)°

∠ABD = (6 × 19 + 9)°

∠ABD = (114 + 9)°

∠ABD = 123°

Kesimpulan :

Besar sudut ABD adalah B. 123°