A geologist in South America discovers a bird skeleton that contains 80% of its original amount of C-14
We use formula 
N0= initial amont of C-14 (at time t=0)
N= amount of C-14 at time t
t= time, in years
k= 0.0001
N is 80% of N0 that is 


Divide both sides by N_o

Take ln on both sides

ln(0.8) = -0.0001t ln(e)
ln(0.8) = -0.0001t
Divide both sides by -0.001
t = 2231.435513
The age of the bird skeleton is 2231 years old
What are the missing measures bro?
Answer:
Angle IEF = Angle CEH ( corresponding)
Therefore Angle CEH = 96°
36864 inch.
because you multiply 32 * 48 * 24 to get the volume
Answer:
(x−10)(x^2+10x+100)
Explanation:
I talked to my partner, you can call them "G00gle"