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Mapel MatematikaBab Baris dan Deret
Barisan Geometri
U3 = 4
U7 = 324
ar² = 4
ar⁶ = 324
ar².r⁴ = 324
4.r⁴ = 324
r⁴ = 81
r = 3
U6 = ar⁵
U6 = ar²r³
U6 = 4(3³)
U6 = 4(27)
U6 = 108
Jadi, jawaban yang tepat adalah B
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Jawabannya:Mapel. : Matematika
Bab. : Barisan dan Deret Bilangan
Pembahasan:
r = ^7-3√(U7/U3)
r = ⁴√(324/4)
r= ⁴√81
r = 3
Maka :
U6 = ar^5
U6 = ar².r³
U6 = 2². 3³
U6 = 4. 27
U6 = 108. → Opsi B
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