Answer:
mean life = 8264.5 s
Step-by-step explanation:
k = - 0.000121
The relation is given by

Now, the mean life is the life time for which the sample retains.
The mean life is the reciprocal of the decay constant.
The relation between the mean life and the decay constant is

Answer:
3
Step-by-step explanation:
A. This expression has 4 terms
B. The constants are -5, 3, 72 and 10
C. The third term is 72
D. The coefficient is y
Answer:
4
Step-by-step explanation:
Answer: 2.4
Step-by-step explanation:
4/5 x 3 = 2 and 3/5
2 and 3/5 converted into decimal is 2.4
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