Question

Pre-calculus word problem 2/3

Answer 1

@xapproachesinfinity

Answer 2

oh pellet the answer in last part was years not seconds dear

Answer 3

i was wondering carbon takes long time to decay

Answer 4

naturally it takes a substance years to decay sorry lol

Answer 5

Oh hahahaha so 13304.65 years?

Answer 6

yes!

Answer 7

Ok, and how would I do this biology one?

Answer 8

let's do this one

Answer 9

rt=ln2
we are looking for t here
so t=ln(2)/r

Answer 10

we are given the r=5% per hour

Answer 11

so r=0.05

Answer 12

t=ln2/0.05

Answer 13

So what exactly is the equation?

Answer 14

And what am I solving for?

Answer 15

you are solving for t which is times it take for the bacteria to double (population)
equation was given to you rt=ln2
solve for t=ln2/r
r is given r=growth rate
they specifically gave us r=5%=0.05

Answer 16

so t=ln2/0.05 in hours

Answer 17

i got t=13.86 hours
nearly 14 hours

Answer 18

So this is it?

Answer 19

yeah

Answer 20

So it takes 13.87 hours?

Answer 21

so to answer this
we say it take nearly 14 hours for a colony of bacteria to double

Answer 22

or just write the number you found 13.86 hours

Answer 23

Got it, thanks! Can you help me with one more? :)

Answer 24

yeh no problem
so far easy word problems hahhaha

Answer 25

lol yeah it's just pre-calculus

Answer 26

i makes sense the the bacteria doubles in that much of hours
have you taken any bio class?

Answer 27

Taking AP Bio this year

Answer 28

oh good!
i have yet to take bio

Answer 29

It's an interesting course, I really like it! :)

Answer 30

yeah science are all interesting stuff once you know it more

Answer 31

did you post?