U5=20 b=-1 berapakah U1 dan U15
Matematika
FillianRizkiwantiGun
Pertanyaan
U5=20 b=-1 berapakah U1 dan U15
1 Jawaban
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1. Jawaban ajiboy123
U1 = a + (n-1)b
= a + (1-1)b
= a
U5 = 20
a + (n-1)b =20
a + 4.(-1) =20
a - 4 = 20
a = 24 = U1
U15 = a + (15-1)b
= 24 + 14. (1)
= 24 -14
= 10