<span> half life i= 78 hours
amount after 78 hours is 395 kg:
395 = 790e^(k*78)
Dividing by 790 and taking natural log
ln (395/790) = (k*78)
-0.6931 = 78k
-0.00888 = k
lets calculate how much is left after 18 hours:
Amount(18)
= 790e^(-0.00888*18)
Amount = 673.301 kg
hope this helps</span>
Answer:
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Answer:
See Explanation
Step-by-step explanation:
The question has missing details; as the radius or an attachment of the hemisphere is not given.
However, I'll solve on a general terms.
The volume of a hemisphere is: 
Take for instance
The volume becomes:
<em>So, all you need to do is plug in the value of radius in the formula.</em>
Domain: possible x values
Range: possible y values
Solution: domain: all real numbers
Range: y greater than 0
