Answer:
4
Step-by-step explanation:
Answer: B C E
Step-by-step explanation:
Distributive property
Answer:
1/2 = r
Step-by-step explanation:
7r + 21 = 49r
Subtract 7r from each side
7r-7r + 21 = 49r-7r
21 = 42r
Divide each side by 2
21/42 = 42r/42
1/2 = r
The ratio of the pink to white marbles is 20%