Matematika

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No 9 nya dong tolong dijawab
No 9 nya dong tolong dijawab

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1 Jawaban

  • b =
    U5/U9 = 59-31/9-5 = 28/4
    b = 7

    U5 = a + (n-1) b = 31
    = a + (4) 7 = 31
    a = 31-28
    =3
    U12 = a+(n-1)b
    = 3+(11)7
    =77+3 =80

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