Brain cells
If you mean HALF LIFE, that is the length of time it takes a quantity of a radioactive element to lose half its radioactivity.
Thirty four and a half.
30 is the answer..
32
sixty-two and five tenths or sixty-two and one half
10
625%
A Half-Life is half the time it takes for a radioactive element or a drug to lose its How_do_you_use_half_life_in_a_sentenceor change into something else.
Half of 60=60 divided by 2=3060/2= 30
5280
67/2 = 33.5
390 minutes.