Question

tolonggggggggggggggggggggg​

Answer 1

Penjelasan dengan langkah-langkah:

diketahui sudut ACD = 2x°

sudut DCB = 3x + 30°

diketahui ACD + DCB = 180°

maka = 2x + 3x + 30 = 180°

= 5x = 180° - 30

= 5x = 150°

= x = 150° ÷ 5

= x = 30°

didapat x = 30°

jadi, sudut ACD = 2x° = 2 (30°) = 60°

sudut DCB = 3x + 30° = 3 (30°) + 30° = 90° + 30° = 120°

Answer 2

Jawaban:

60°

Penjelasan dengan langkah-langkah:

pertama tama kita cari nilai x dulu.

karena sudut ACD dan sudut DCB berpelurus maka jika dijumlah sudutnya 180°

<ACD + <DCB = 180°

2x + (3x + 30°) = 180°

2x + 3x + 30° = 180°

5x + 30° = 180°

5x = 150°

x = 150°/5

x = 30°

<ACD = 2x

= 2 x 30°

= 60°

<DCB = 3x + 30°

= 3(30°) + 30 °

= 90° + 30°

= 120°

mohon dicek lagi ya semoga membantu...