" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Materi : Barisan dan deretKelas : IX SMP
Kategori : Matematika - Easy
Pembahasan :
Sn = 30n - 5
Maka...
S2 + S4
= (30 . 2 - 5) + (30 . 4 - 5)
= (60 - 5) + (120 - 5)
= 55 + 115
= 170