This is a chemistry question but <span>Atoms are made of two distinct particles.
Electrons occupy a single energy level.
Electrons are smaller than protons.
The majority of an atom's mass is in the nucleus.
Protons and neutrons are about the same size. </span>
Answer:
540°
Step-by-step explanation:
The sum of the interior angles of a polygon is:
(n-2)*180
where n = number of sides
Here you have :
(5 - 2)*180 = 540°
Firstly, you must find the product of 2 and x which is 2x. Add 8 and you get 2x+8.