Answer:
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5. After 6 hours, the concentration is halved. After 12 hours, it will be quartered. If the original concentration is 200 nmol, a quarter is 50 nmol.
14. The population doubles after 3 hours, and a day is 24 hours. That means that the original population should be multiplied by
, or
. 3 million times
is 3 * 256 million, or 768 million.
15. The concentration is halved every 8 hours and the original concentration is 100 nmol. So now, how many times do you halve 100 to get to 12.5?
100/2 = 50, 50/2 = 25, 25/2 = 12.5. That's three times. 3 * 8 is 24 hours, or 1 day.
Equation = 12 - -24 = ?
After keep, change, flip: 12 + 24 = ?
Answer = 36
Answer: 4 ÷ 0.96 = 4.16666666667
Step-by-step explanation:
Hello,
nice as problem.

Here x has a power of 5 as divider and a power of 2 as divider (in order to make a power of 10.



Numbers of dividers: (8+1)*(7+1)=9*8=72