Answer:
Therefore , 
Step-by-step explanation:
The fraction of population who have heard rumor = y
The fraction of population who haven't heard rumor = 1-y
The rate of of spread (y'(t)) is proportional to the product of the fraction of population who have heard rumor the fraction of population who have heard rumor.
Therefore
y'(t) ∝ y (1-y)
⇒ y'(t) =k y (1-y) [ k = constant of proportional]


Integrating both sides

![[\because \frac{1}{y(1-y}=\frac{1}{y}+\frac{1}{1-y} ]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Cfrac%7B1%7D%7By%281-y%7D%3D%5Cfrac%7B1%7D%7By%7D%2B%5Cfrac%7B1%7D%7B1-y%7D%20%5D)
[ c = arbitrary constant]


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Therefore , 
Answer:
w=30 l=125
Step-by-step explanation:
Perimeter =2l+2w
p=310
w =width
4w+5 = length(4 times plus 5 the width)
2(4w+5) + 2w = 310
8w+10 = 2w =310
10w=300
w=30
30*4=120 120+5=125 l=125
2(125)+ 2(30)= 250+60 =310
Answer:
Step-by-step explanation:
20
Answer:
hi i dont understan hahahag
Answer:
reflections Couse it keeps repeating y and z bit not sure
Step-by-step explanation:
I am sorry if it is the wrong answer