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^(−8.859t)
divide both sides by a 1/2=e^(-8.859t) take the ln of both sides ln0.5=-8.859t divide both sides by -8.859 (ln0.5)/-8.859=t 0.078242147=t thousandts 0.078=t
