<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:
(-3,-4)
Step-by-step explanation:
Answer:
300 times
Step-by-step explanation:
600 * 1/2 = 600/2
=300
Answer:
3: 1
Step-by-step explanation:
hope this helps
1)105 divided by 2 equals 52.5
2)294 divided by 6 equals 49 then, 49 times 8 equals 392
3)22 divided by 5 equals 4.4 then, 77 divided by 4.4 equals 17.5
