Answer:

Step-by-step explanation:
Let
be the average of the sample, and the population mean will be
We know that:
gr
Let
be the standard deviation and n the sample size, then we know that the standard error of the sample is:

Where


In this case we are looking for:

This is:
or 

Now we get the z score



Looking at the tables for the standard nominal distribution we get


3.142×40^2×150=753,982.237
if1sec =0.2litres
what about 753.982=
753.982×1/0.2
=22.80
we have the function

we know that
In the equation of the exponential function of the form

a is the initial value
b is the base
x is the exponent
The initial value is the value of the function when the value of x is equal to zero
in this problem
for 


the initial value is the point 
therefore
the answer in the attached figure
Answer:
Any of the 4 sequences gives another rectangle
Explanation:
Any rotation or traslation you make over a rectangle wont change the fact that you have still a rectangle.
The same will happen if you make a reflection of any on the axis. Therefore any of the 4 sequences given will give you a rectangle.