Answer:
There is no variable so -3 therefore cannot be a solution to this.
Answer:
-8
Step-by-step explanation:
multiply for on both sides then divide by 3
I think its B because
your multiply 4 on both sides
and then you divide by 3
Answer:
7√20
7√2*2*5
14√5#
Step-by-step explanation:
don't forget to mark as a brainlist
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.