Butuh segera jawabannya y kawan

no . 6
60 : 1/3 = 60 * 3 = 180 bungkus kantong plastik
no. 7
(32 ^-1/5) - (64 ^1/3) = 1/2 - 4 = -7/2
no. 8
a = 16^3/4
b = 125^2/3
a-b = 8-25 = -17
no. 9
a = 3
b = 4
n = 20
Sn = 1/2n (2a + (n-1)b)
S20 = 1/2 * 20 (2*3 + (20-1)*4)
S20 = 10 (6+76)
S20 = 820 (c)