Respuesta :

Answer:

1. 12.9 - 5.07 = 7.83

2. It would weigh 2 1/6 ounces

3. A,C

4. 10 1/2 = 5 + 5 1/2

5. One-ninth as many as the sum of 2 and 5

Step-by-step explanation:

Hope this helps.