Pada baris 16, 19, m, 25, 28, n, 34.. A.tentukan medan n B.tentukan 2 m+ n

Mapel : Matematika

Kelas : 9

Bab : Barisan dan Deret bilangan
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16, 19, m, 25, 28, n, 34


→ Dari barisan tersebut beda tiap suku nya adalah :

19 - 16 = 28 - 25 = 3


Maka,
→ Nilai m

= 19 + 3
= 22

→ Nilai n

= 28 + 3
= 31


→ Nilai 2m + n

= 2m + n
= 2(22) + 31
= 44 + 31
= 75

U1 = 16
U2 = 19
b = U2 - U1 = 19 - 16 = 3

M = U3 = U2 + b = 19 + 3 = 22
N = U6 = U5 + b = 28 + 3 = 31

A n = 31
B 2m + n = 2(22)+31 = 75