barisan aritmetika U4=8 U8=16 suku ke -12 adl
Matematika
Riniwinda00
Pertanyaan
barisan aritmetika U4=8 U8=16 suku ke -12 adl
2 Jawaban
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1. Jawaban andri77
u8-u4 = 16-8
a+7b - (a+3b) = 8
4b=8
b=8/4 =2
a+3b= 8
a=8-3.2
a=8-6 = 2
u12 = a+11b
=2+ 11.2
=2+22
=24
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2. Jawaban Anonyme
Bab Barisan dan Deret
Matematika SMP Kelas VIII
b = (U8 - U4) / (8 - 4)
= (16 - 8) / 4
= 8/4
= 2
U12 = U8 + 4b
= 16 + 4 . 2
= 16 + 8
= 24