Suku ke 3 dan ke6 suatu barisan geometri 96dan 12 suku ke 10???

Mapel : Matematika
Kelas : IX SMP
Bab : Barisan dan Deret

Pembahasan :
Barisan Geometri

U3 = 96
U6 = 12

Perbandingan Rasio
U6/U3 = (ar^5)/(ar²)
12/96 = r^3
1/8 = r^3
Rasio = 1/2

U3 = ar²
96 = a(1/2)²
96 x 4 = a
a = 384

U10 ?
U10 = ar^9
U10 = (384)(1/2)^9
U10 = (384)(1/512)
U10 = 384/512
U10 = 192/256
U10 = 48/64
U10 = 12/16
U10 = 6/8
U10 = 3/4