Simplify the Following: ​ 10 - ( 9 - 18

question 60

Multiple Choice

Simplify the following: ​ 10 - ( 9 - 18 ) / 3 ​

• A) -3
• B) -5
• C) 19
• D) -11
• E) 13

---

Definitions:

Ionize

The process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons.

Alpha Particles

A type of ionizing radiation consisting of two protons and two neutrons; they are a common form of particles emitted by radioactive materials.

Gamma Rays

Electromagnetic radiation of the highest frequency and energy, emitted from atomic nuclei during radioactive decay.

Background Radiation

The ionizing radiation present in the environment naturally from cosmic rays, radon gas, and other sources not due to deliberate human activity.