Question 982683
Hi there,
a/2=ae^−4.457t
Using a = 10 and a/2 = 5
a/2=ae^−4.457t
5 = 10 e^-4.457t
5/10 = e^4.457t
0.5 = e^-4.457t
ln0.5 = -4.457t ln e (ln e = 1)
ln 0.5 = -4.457t
t = ln 0.5/-4.457
t = 0.156 days
Hope this helps:-)