Answer: 
 
Step-by-step explanation:
Given
Equations are  and
 and 
take 

Put the value of y in another equation 

Put the value of x in y

Hence,  
 
 
        
             
        
        
        
Answer:
The perimeter is 240
Step-by-step explanation:
The side length is 60 and 60*4=240
hope this help!
 
        
             
        
        
        
Answer:
Please see explanation for the answer. The code is written in python and is as given below:
Step-by-step explanation:
The solution is obtained on the Python with the following code
import matplotlib.pyplot as plotter
import numpy as npy
x_s = npy.linspace(-5,5,100)  #Defining a linear sample space with boundaries as -5 to 5 and 100 as number of samples.
def sigmo(z):return 1/(1 + npy.exp(-z)) #Defining sigmoid function for the f(x).
plotter.plot(x_s, sigmo(x_s))
plotter.plot([-5,5],[.5,.5])
plotter.xlabel("z")
plotter.ylabel("sigmoid(z)")
plotter.show()
 
        
             
        
        
        
The distance? If it is asking for the distance then its square root 313.