100 Things Blues Fans Should Know & Do Before They Die (100 Things...Fans Should Know)

100 Things Blues Fans Should Know & Do Before They Die (100 Things...Fans Should Know)

Matematika Suatu barisan aritmatika diketahui t 1.=52 dan beda 4. Berapakah suku ke-21

Suatu barisan aritmatika diketahui t 1.=52 dan beda 4. Berapakah suku ke-21

Jawaban:

132

Penjelasan dengan langkah-langkah:

  • a = 52
  • b = 4
  • n = 21

Un = a + (n - 1).b

U21 = 52 + (21 - 1).4

U21 = 52 + 20.(4)

U21 = 52 + 80

U21 = 132

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