Matematika

Pertanyaan

Fungsi K Dirumuskan K(x)= 7x-4. Jika k(a)=17 maka nilai a adalah.... Pilihan: a.-3 b.-1 c.3 D.1

2 Jawaban

  • k(x) = 7x - 4
    k(a) = 17
    7x - 4 = 17
    7(a) - 4 = 17
    7a - 4 = 17
    7a = 17 + 4
    7a = 21
    a = 3

    Jawaban = C
  • k(x)= 7x -4
    k(a)= 7a -4 = 17

    7a-4= 17
    7a = 17+4
    7a= 21
    a= 21/7
    a= 3

    jawaban c .3

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