Suku ke 12 dari barisan 46,55,64,73
Jawaban Terkonfirmasi
Barisan Aritmatika
46, 55, 64, 73, …
U1 = a = 46
b = U2 – U1 = 55 – 46 = 9
Un = a + (n – 1)b
U12 = 46 + (12 – 1)(9)
U12 = 46 + 99
U12 = 145 ✔
46,55,64,73,82,91,100,109,118,127,136,145
suku ke12 = 145