fungsi di rumuskan dengan 5×-12,jika f(a)=28 maka nilai 5a adalah.....
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Menentukan nilai a
f(x) = 5x - 12
f(a) = 5a - 12
28 = 5a - 12
40 = 5a
a = 40/5
a = 8
5a
5(8)
5 × 8
= 40
Penjelasan dengan langkah-langkah:
f(x) = 5x - 12
f(a) = 28
5a - 12 = 28
5a = 28 + 12
5a = 40
a = 40/5
a = 8
5a
= 5.8
= 40
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