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Suku pertama barisan aritmetika adalah 4 dan bedanya adalah 3. Tentukan suku ke-10 barisan aritmetika tersebut!

Suku pertama barisan aritmetika adalah 4 dan bedanya adalah 3. Tentukan suku ke-10 barisan aritmetika tersebut!

Jawaban soal ini adalah 31

Ingat!
Rumus mencari suku ke-n atau Un
Un = a + (n-1)b
dengan
b = beda
Un = suku ke-n
U1 = a = suku ke-1/ pertama
n = banyak suku pada barisan aritmatika

Pembahasan
a = 4
b = 3

karena dicari suku ke-10 maka dicari U10
Un = a + (n-1)b
U10 = 4 + (10 – 1)3
= 4 + 9 (3)
= 4 + 27
= 31

Jadi, suku ke-10 barisan aritmetika tersebut adlaah 31

Rekomendasi lainnya :

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