" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Pelajaran :MatematikaKelas :9
Bab :6
Nama Bab :Barisan dan Deret Bilangan
Kode mapel:2
Kode :9.2.6
Jawab:
U3=ar²
18=ar²
a=18/r²
U5=ar⁴
162=(18/r²)r⁴
162=18r²
r²=162/18
r=√9
r=3
a=18/r²
=18/(3)²
=18/9
=2
U9=ar⁸
U9=(2)(3)⁸
U9=2(6.561)
U9=13.122