Barisan aritmatika u1=27 u2=43 u9=?
Matematika
darmazulfi00
Pertanyaan
Barisan aritmatika u1=27 u2=43 u9=?
2 Jawaban
-
1. Jawaban ruthstephanis
B
= U2 - U1
= 43 - 27
= 16
U9
= U1 + 8B
= 27 + 8(16)
= 27 + 128
= 155 -
2. Jawaban SadrinaDarayani248
• Dik :
Barisan Aritmatika = 27, 43, . . .
a = 27
b = 43 - 27 = 16
• Dit :
U9 = . . . ?
• Jawab :
Un = a + (n - 1) b
U9 = 27 + (9 - 1) 16
= 27 + 8 • 16
= 27 + 128
U9 = 155
Maaf kalau salah:)
Semoga membantu:D