Answer:
Step-by-step explanation:
The cost will be 7$ per month
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Answer:
I would say (E) You welcome for meh so called help
Hi there :)
So since they initially drank 50 gallons, half of that is 25 gallons. 50+25= 75, therefore they drank 75 gallons.
Jada has 12 library books and 1/3 of that is 4, because 12 divided by 3 is 4, so 12-4=8. That means Han checked out only 8 books.
Good luck with the rest of your assignment, have a good day/night!!
Answer:
Step-by-step explanation:
You wrote the formula incorrectly. It is, correctly:
![N=N_0e^{-kt}](https://tex.z-dn.net/?f=N%3DN_0e%5E%7B-kt%7D)
The k has to be a negative in the formula; if it's not, the time ends up as negative, which will NEVER be the case (unfortunately, time does not go backwards).
If the skeleton contains 67% of the C-14 it contained when the bird was alive, that 67 is our "N". When the bird was alive, it contained 100% of its C-14; so
is 100. We know k, e is Euler's number, and we are looking for t.
![67=100e^{-.0001t}](https://tex.z-dn.net/?f=67%3D100e%5E%7B-.0001t%7D)
Begin by dividing both sides by 100 to get
![.67=e^{-.0001t](https://tex.z-dn.net/?f=.67%3De%5E%7B-.0001t)
To get that t out from its current exponential position, we take the natural log of both sides. We do this because 1. it's the only way to get an exponent down from that position and 2. because natural logs and e are inverses of each other; natural logs "undo" e's and e's "undo" natural logs.
Again, because e and ln undo each other:
ln(.67) = -.0001t and solve for t. Take the natural log of .67 on your calculator and get
-.4004775666 = -.0001t and
t = 4004.7 years