Question

tolong sama proses nyaa

Answer 1

Penjelasan dengan langkah-langkah:

a.

[tex]38 + x + 90 = 180 \\ 128 + x = 180 \\ x = 180 - 128 \\ x = 52[/tex]

b.

[tex]90 + 2x + 3x = 180 \\ 90 + 5x = 180 \\ 5x = 180 - 90 \\ 5x = 90 \\ x = \frac{90}{5} \\ x = 18[/tex]

= 2x

= 2.18

= 36°

= 3x

= 3.18

= 54°

Answer 2

Jawaban:

a. x° = 52°

b. 2x° = 36° , 3x° = 54°

Penjelasan dengan langkah-langkah:

a. x° = 90° – 38° = 52°

b. i. 90° + 2x° + 3x° = 180°

90° + 5x° = 180°

5x° = 180° – 90°

5x° = 90°

x° = 90° ÷ 5

x° = 18°

ii. 2x° = 2 × 18° = 36°

iii. 3x° = 3 × 18° = 54°