Jawab:
Penjelasan dengan langkah-langkah:
2x + 5x + 2x = 180
9x = 180
x = 20
5 . 20 = 100
D. 100
5a + 4a + 90 = 180
9a + 90 = 180
9a = 90
a = 10
4 . 10 = 40
B. 40°
Jawaban:
5 × 20 = 100 (opsi D)
4 × 10 = 40° (opsi B)
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Jawab:
Penjelasan dengan langkah-langkah:
2x + 5x + 2x = 180
9x = 180
x = 20
5 . 20 = 100
D. 100
5a + 4a + 90 = 180
9a + 90 = 180
9a = 90
a = 10
4 . 10 = 40
B. 40°
Jawaban:
2x + 5x + 2x = 180
9x = 180
x = 20
5 × 20 = 100 (opsi D)
5a + 4a + 90 = 180
9a + 90 = 180
9a = 90
a = 10
4 × 10 = 40° (opsi B)