Respuesta :

fatemehkorea

Answer:

C) 19

Step-by-step explanation:

9+10 = 19

hart242

Answer:

B) 21

Step-by-step explanation:

Because 3×3=9 and 2×5=10

If you switch it, 3×2 and 3×5, that is equal to 6 and 15.

6+15=21