Question

Mohon bantuannya kakak kakak... saya kurang paham..

Answer 1

Verified answer

Jawab
pertambahan penduduk  2010 - 2015
2010= u1 = 42
2011= u2 = u2
2012 = u3 = 168

u3/u1 = 168/42
r^2 = 4
r= 2

jumlah dari 2010 sampai 2015 = s6
sn = a (r^n - 1)/(r -1)
s6 = 42 (2^6 - 1) / (2 - 1)
s6 = 42 (63)/ (1)
s6 = 2.646