PLEASE HELP!!!
A radio active isotope decays according to the exponential decay equation where t is in days.
Round to the thousandths place.
For the half life: The half life is the solution (t) of the equation : a/2=ae^−3.568t

Question

PLEASE HELP!!!
A radio active isotope decays according to the exponential decay equation where t is in days. 
Round to the thousandths place. 
For the half life: The half life is the solution (t) of the equation : a/2=ae^−3.568t

welshfella · Answer

first divide both sides by a
1/2 = e^-3.568t
take logs of both sides
ln (1/2) = -3.568t
solve for t

anonymous · Answer

5.1478? @welshfella