Answer:
Step-by-step explanation:
3/4 divied by 15 = 1/20
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5 just do 4 divided by 20
Which question do you need help with?
Answer:
N = 7.5 pounds
Step-by-step explanation:
Formula for the radioactive decay is given by,

Here, N = Final amount
N₀ = Initial amount
λ = Decay constant
t = Duration of decay
Now we can substitute the values from the given question,
N = 
N = 
N = 15(0.5)
N = 7.5 pounds