First multiply all terms by z
8-z^2=4z
Then order into standard form
-z^2-4z+8=0
Multiply the equation by -1
z^2+4z-8=0
Plug into quadratic equation
-4±√16-4(-8)
-4±√48
(-4±4√3)/2
-2±2√3
Final answer: z=-2± 2√3
Answer:
9 students
Step-by-step explanation:
There are 9 students wearing blue shirts, and 6 students are wearing white shirts. This means there are 9 students not wearing blue or white shirts.
<h2>Answer: 36-gon (also called triacontakaihexagon)
</h2>
Let's start by explaining that a polygon is a closed geometrical figure composed from three or more lines. These lines (sequence of straight segments) are the sides of the polygon, and the points where they intersect are called vertices that form their angles.
It should be noted that its name comes from the Greek word <em>polygōnon</em> (many angles), since the angles (although the sides are used, as well) are those that will define the name the polygon will have.
In this sense, for a polygon that has 36 angles, its name is 36-gon, and formally named as triacontakaihexagon or triacontahexagon (sometimes the Greek word <em>kai</em> that serves as connector, is omitted).
