The half life of the substance is 6.92 days.
<h3>What is the Half life ?</h3>
Half life can be defined as the time required to reduce the concentration to half of its initial value.
Here the equation given is

The concentration will reduce to half therefore

so,

ln 0.5 = - 0.1001 * t(1/2)
-0.693 = -.1001 * t(1/2)
t(1/2) = 6.92 days.
Therefore the half life of the substance is 6.92 days.
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Answer: it's 1/8
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Answer:
top left perimeter is 36 top left is 28 bottom right is 72 i cant see the bottom left
Step-by-step explanation:
but yeah just take each number multiply by 2 then add both of them up
30.6 because 10.2 times 30 is 30.6