Answer:
22 grams
Step-by-step explanation:
loses 50% of it's mass per 22 years
so after 22 years the mass would be 44 grams
22 years later would leave 50% of 44 grams = 22 grams
Answer:
b
Step-by-step explanation:
i just took it on edge
Here, both numbers are divisible by 7 so that brings you to 9:4
Answer:
68
Step-by-step explanation: