Respuesta :

Answer:

wich one all

Step-by-step explanation:

9. (4.2 x 10^5) x (3.7 x 10^6)
420,000 x 3,700,000
1.554e+12

10. 983,700,000

11. (7.8 x 10^5) / (1.2 x 10^9)
780,000 / 1,200,000,000
0.00065
6.5x10-4