Question 1167473

There are 5500 lbs of a radioactive element with a half life of 5 years. What is its continuous decay rate? Please write your answer as a percentage using 2 decimal places.
<pre>If ½ life is “a” years, then k, or Continuous Decay Rate, or DECAY CONSTANT = {{{ln(1/2)/a}}}. In this case the continuous decay rate, or decay constant = {{{highlight_green(matrix(1,12, ln(1/2)/5, "=", "|- 0.13862944|", "=", highlight("13.86%"), "(as", a, "percent,", to, 2, decimal, "places)"))}}}
Note that the rate is negative (< 0), and should be since the element DECAYED over time.