Answer:
<h2>10</h2>
Step-by-step explanation:
Answer:
TRUE
Step-by-step explanation:
A complex number is represented as z = x + iy
Given the complex number -5i, this can also be written as;
z = 0-5i
Get the modulus
|z| = √0²+(-5)²
|z| = √25
|z| = 5
Get the argument
theta = arctan(y/x)
theta = arctan(-5/0)
theta = arctan(-∞)
theta = -90degrees
Since tan is negative in the 2nd and fourth quadrant
in the fourth quadrant, theta - 360 - 90
theta = 270 degrees
Express in polar form;
z = |z|(cos theta + i sintheta)
z = 5(cos270°+ison270°)
Hence the statement given is TRUE
Answer:
1/41664
Step-by-step explanation:
porches have 41664 choices, one of them is red and yellow, and blue
Y is greater than 0.1 I think I hope this helps I'm sorry if I get it wrong
The price of the book is 125% higher than the price of the notebook if the price of a notebook is 20% less than the price of a book.
<h3>What is the percentage?</h3>
It is defined as the ratio of two numbers expressed in the fraction of 100 parts. It is the measure to compare two data, the % sign is used to express the percentage.
Let x is the price of the book
And y is the price of the notebook,
Then,
y = x- 0.20x = 0.80x
x = (1/0.80)y
x = 1.25y
So x is 1.25 or 125% higher than the, y
Thus, the price of the book is 125% higher than the price of the notebook if the price of a notebook is 20% less than the price of a book.
Learn more about the percentage here:
brainly.com/question/8011401
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