This is really easy, because 8m is 200% you have to divide it in half to figure out the 100% which is 4... now you have to find the 75%. all you have to do is divide 4 by 25% which is 3.
2x -4xydy/dx+ 2ydy/dx= 0
(2y-4xy) dy/dx = -2x
dy/dx = -2x / 2y-4xy
The question is an illustration of multiplication model.
The multiplication model is: 
From the figure, the shaded portions are:


So, the multiplication model represents:

This gives

Express as decimal


Hence, the multiplication model is:

Read more about multiplication models at:
brainly.com/question/1928793
Answer:
4.472135955
Step-by-step explanation:
I used a Calculator

Answer:
AE = 60 units
Step-by-step explanation:
GE is one third the length of AE so...
GE = 1/3(AE)
20 = 1/3x
3(20) = (1/3x)3/1
60 = x
x = 60
AE = 60 units