Question

Jawab salah satu aja gpp.... please buat besok

Answer 1

Verified answer

15. 4 × n = 9
n = 9/4. berarti perbesaran foto 9/4 kali.
maka sisi terpendek menjadi 3 × 9/4 = 6,75 (C)

16. a : b = 3 : 4, maka a = 3/4 × b.
6a + b = 6 ×(3/4 × b) +b = 9/2 × b + b = (11b)/2.
4a + 5b = 4 × (3/4 × b) + 5b = 8b.

11b/2 : 8b = 11 : 16 (D)