Given that
, it has PDF
and thus CDF
The 25th percentile is the value
such that
. We have
Answer: to go about this problem the easiest way for me would be to see what I can multiply to get 81. Imminently I see that 9*9 is 81 and it also adds up to 18 :)
so the answer is 9 and 9 give me a thumbs up if this helped!
The equation in rectangular coordinates. (x - 1)² + y² = 1
<h3>What are different Coordinate Systems ?</h3>
There are many types of coordinate system depending upon the usage and ease of working , Spherical , Rectangular , Cylindrical , Polar are the examples of Coordinate System.
It is given that the equation in polar coordinates is r = 2 cosθ
To change in rectangular coordinates
The relation between polar and rectangular coordinate is
x = r cosθ and y = r sinθ
x² + y² = r²
r = 2 cosθ
r² = 2r cosθ
r² = x
so the equation in rectangular coordinate system becomes
x² + y² = 2x
x² - 2x + y² = 0
x² - 2x + 1 + y² - 1 = 0
(x - 1)² + y² = 1
This represents the equation in rectangular coordinates.
To know more about Coordinate System
brainly.com/question/13498438
#SPJ1
Answer:
Subtraction property
Step-by-step explanation:
Because it’s 12 subtracted by 6 to get 6