Answer: years of equal population are 1995 and 2022.
in 1995, population was 425,000 people and in 2022, population was 1,910,000 people.
Step-by-step explanation: Baskinville: y = x2 - 22x + 350
Cryersport: y = 55x - 950
Note that x2 is xsquare not x2
Resolving the quadratic equations carefully will give the values of y and x which represent the population and years.
Answer:
Length = 72 mm
Width = 46 mm
Ratio = 72:46 = 36:23
Step-by-step explanation:
72 and 36 both are divisible by 2. so when we divide them by two we get 36 and 23. we can divide both the sides only with the same number, but 36 and 23 have no common factors. so we leave it here and this is the answer.
Answer: A
Step-by-step explanation:
A geologist in South America discovers a bird skeleton that contains 80% of its original amount of C-14
We use formula ![N = N_oe^{-kt}](https://tex.z-dn.net/?f=N%20%3D%20N_oe%5E%7B-kt%7D)
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 ![N= 0.80N_o](https://tex.z-dn.net/?f=N%3D%200.80N_o)
![N = N_oe^{-kt}](https://tex.z-dn.net/?f=N%20%3D%20N_oe%5E%7B-kt%7D)
![0.80N_o = N_oe^{-kt}](https://tex.z-dn.net/?f=0.80N_o%20%3D%20N_oe%5E%7B-kt%7D)
Divide both sides by N_o
![0.8=e^{-0.0001 t}](https://tex.z-dn.net/?f=0.8%3De%5E%7B-0.0001%20t%7D)
Take ln on both sides
![ln(0.8)=lne^{-0.0001 t}](https://tex.z-dn.net/?f=ln%280.8%29%3Dlne%5E%7B-0.0001%20t%7D)
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