nomor 12 13 15 16 ..........

15. Diketahui :
menang = 4
Kalah = -2
Seri = 1

Jawab :
Menang = 12 × 4 = 48
Seri = 4 × 1 = 4
Kalah = 4 × (-2) = -8
Jumlah skor : 48+4+(-8) = 44

maaf cuman bisa jawab 1

12) sisi = 96 ÷ 6 = 16 cm
a = ½ . 16 = 8 cm
c = 16 cm
b = √c² - a²
b = √16² - 8²
b = √ 256 - 64
b = √ 192
b = 8√3 cm
b = t
Luas = 2 × ½ × a × t
= 2 × ½ × 16 × 8√3
= 128√3 cm (D)

13) Kel = 2 × π × r
= 2 × 22/7 × 21
= 132 cm
jarak = 132 × 15.000
= 1.980.000 cm
= 19.800 m (A)

15) nilai = (12 × 4) + (-2 × 4) + (1 × 4)
= 48 - 8 + 4
= 44 (D)

16) 2^2x-1 = 32 / (8^x-3)
2^2x-1 = (2^5) / {(2³)^x-3}
2^2x-1 = (2^5) / (2^3x-9)
2^2x-1 = 2^5 . 2^-3x+9
2^2x-1 = 2^-3x+14
----> 2x - 1 = - 3x + 14
---> 2x + 3x = 14 + 1
---> 5x = 15
---> x = 3 ( E)