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
Answer1: for every 5 kids there are 9 parents
2 part a: the for every 4 cookies for every 9 sodas that are sold
2 part b:the ratio of cookies to soda is 9:4
3.the ratio of pencils to erasers is 15:7
3: for every 15 pencils there are 7 erasers.
4.The first blank is 2eyes there Are4 legs
Step-by-step explanation:
<h3>
Answers: B, C, F, H, J</h3>
Explanation:
The graph of the linear equation y = -1/3x, aka y = -x/3, goes through the points (0,0) and (3,-1). To generate any point, plug in a value for x to get its paired value of y.
Another way to graph this line is to start at (0,0). Then move down 1 and over to the right 3 units to arrive at (3,-1). Draw a straight line through those points.
The graph is shown in the diagram below. Points B, C, F, H, J are all below that red line.