A complex number has a real and an imaginary part
is a complex number
A complex number is represented as:
Where:
<em />
<em> real</em>
<em />
<em> imaginary</em>
<em />
By comparing the options to ;
and 
are not complex numbers
This is so because they do not have imaginary parts
However,
is a complex number
Because; 9i is imaginary
Read more about complex numbers at:
brainly.com/question/19007885
The answer if you are looking for it this way.2.23
Answer:
The distance between A(-8, 4) and B(4, -1) is 13 units.
Step-by-step explanation:
To find the distance between any two points, we can use the distance formula given by:
We have the two points A(-8, 4) and B(4, -1). Let A(-8, 4) be (<em>x₁, y₁</em>) and let B(4, -1) be (<em>x₂, y₂</em>). Substitute:
Evaluate:
So:
The distance between A(-8, 4) and B(4, -1) is 13 units.
Answer:
aerts is older by 1 year
Step-by-step explanation:
Answer:
option D
Step-by-step explanation:
take 39 degree as reference angle
using cos rule
cos 39 = adjacent / hypotenuse
0.77 = x / 7
x = 7*0.77
x = 5.39
x = 5.4
