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Verified answer
B = U2-U1 = 18-9= 8. a = 9. Un = a+(n-1)xb U30 = 9+(30-1)x9 U30 = 9+29x9 U30 = 9+261 U30 = 270Bahasan : Deret Aritmatika
Jawaban : 270
Langkah - langkah :
9, 18, 27, 36, n, memiliki :
a = 9
b = U2 - U1 = 18 - 9 = 9
U30 = 9 + (30 - 1)9
U30 = 9 + 29(9)
U30 = 9 + 261
U30 = 270