Answer:
17
Step-by-step explanation:
45 - 28
Hope this helps!!!!!!!
Pakistan, china, Nepal, and Bhutan
Answer:
x=20
Step-by-step explanation:
73-13=60
60÷3=20
240 days is 4 times the half-life, which means that a sample of 1000 mg will decay to

after 240 days.
Answer:
0.85714285714
Step-by-step explanation:
Use a calculator in google.