Matematika Sekolah Menengah Pertama tolong bantuannya#no ngasal​

rudyhellerulv – March 09, 2023

tolong bantuannya
#no ngasal​

Jawaban:

1. D

2. A

Penjelasan dengan langkah-langkah:

1. n = 5, a = 12, U5 = 24, S5 = ...

• S5 = 5/2 (a + U5)
• S5 = 5/2 (12 + 24)
• S5 = 5/2 x 36
• S5 = 90 dm

2. n = 15, a = 10, b = 2, S15 = ...

• S15 = 15/2 (2a + (15 - 1)b)
• S15 = 15/2 (2x10 + 14x2)
• S15 = 15/2 (20 + 28)
• S15 = 15/2 x 48
• S15 = 360

[answer.2.content]