Answer:
64/9 or 7 or 1/9
Step-by-step explanation:
4 3/9 + 2 7/9 = 64
9
= 71
9
It would take Maren 80 minutes, or 1 hr and 20 min. Just divide the 24 minutes by the 3 in the numerator, then find out how many 1/5's it takes to get 2 and multiply that by what you got as your quotient
Answer:
![n(A) = n_1A^k](https://tex.z-dn.net/?f=n%28A%29%20%3D%20n_1A%5Ek)
Step-by-step explanation:
Taking into account that the growth rate of the number of species on the island is proportional to the density of species (number of species between area of the island), a model based on a differential equation is proposed:
![\frac{dn}{dA} = k\frac{n}{A}](https://tex.z-dn.net/?f=%5Cfrac%7Bdn%7D%7BdA%7D%20%3D%20k%5Cfrac%7Bn%7D%7BA%7D)
This differential equation can be solved by the method of separable variables like this:
with what you get:
![\int\ {\frac{dn}{n}}\ = k\int\ {\frac{dA}{A}}](https://tex.z-dn.net/?f=%5Cint%5C%20%7B%5Cfrac%7Bdn%7D%7Bn%7D%7D%5C%20%3D%20k%5Cint%5C%20%7B%5Cfrac%7BdA%7D%7BA%7D%7D)
. Taking exponentials on both sides of the equation:
![e^{ln|n|} = e^{ln|A|^{k}+C}](https://tex.z-dn.net/?f=e%5E%7Bln%7Cn%7C%7D%20%3D%20e%5E%7Bln%7CA%7C%5E%7Bk%7D%2BC%7D)
![n(A) = e^{C}A^{k}](https://tex.z-dn.net/?f=n%28A%29%20%3D%20e%5E%7BC%7DA%5E%7Bk%7D)
how do you have to
, then
![n(A) = n_1A^k](https://tex.z-dn.net/?f=n%28A%29%20%3D%20n_1A%5Ek)
Answer:
2/7
Step-by-step explanation:
5/7-3/7=2/7
When you subtract or add fractions, you change only the numerator and keep the denominator. If the denominators aren't the same, you have to find a similar factor that they can be changed to, then they can be added or subtracted. Luckily, this wasn't a case like that.