Matematika Kelas 9 Halaman 55 ⚡

Then they recalled a word problem: Sebuah amoeba membelah diri menjadi dua setiap 20 menit. Jika mula-mula ada 4 amoeba, berapa banyak setelah 2 jam? (“An amoeba splits into two every 20 minutes. Initially there are 4 amoeba, how many after 2 hours?”)

From Rina’s memory, the first problem was: ( 2^3 \times 2^5 ). “That’s ( 2^{3+5} = 2^8 = 256 ),” Rina said quickly. “Too easy. The next one must be harder.” matematika kelas 9 halaman 55

Rina laughed, closing the book. “Or maybe… page 55 was inside us all along.” If you can tell me the exact from that page (e.g., "perkalian bilangan berpangkat" or "notasi ilmiah"), I’ll write a story specifically matching that content. Then they recalled a word problem: Sebuah amoeba

“Two hours = 120 minutes,” Rina calculated. “120 ÷ 20 = 6 divisions.” Initially there are 4 amoeba, how many after 2 hours

Here’s a story built around an exponents problem:

“See?” Dani smiled. “We didn’t need page 55. We just needed to think like page 55.”

Dani scribbled a memory-fragment: ( \frac{3^7}{3^4} ). “Subtract exponents,” she said. ( 3^{7-4} = 3^3 = 27 ).