Matematika

Pertanyaan

U3=36 dan U5=81 maka U2?

1 Jawaban

  • U3 = a + 2b = 36
    -
    U5 = a + 4b = 81
    = - 2b = -45
    b = -45 / -2
    b = 22,5

    U3 = a + 2b
    36 = a + 2(22,5)
    36 = a + 45
    36 - 45 = a
    -9 = a

    jadi
    U2 = a + b
    = -9 + 22,5
    = 13,5

Pertanyaan Lainnya