Question

How could to solve this
​

Answer 1

Answer:

5

Explanation:

40 divided by 16 *2 will give you answer

Answer 2

Explanation:

At = Ao (1/2)^ t/Th

Th = Half life

At = 1/16 Ao

Solution ,

1/16 = (1/2)^t /th

( 1/2)^4 =( 1/2)^t/th

Compare

t /th = 4

Th = t/4

Th = 40/4 = 10 Answer

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