1. Why are letters that are used in mathematical equations called variables?

A. Because it makes the equations more complicated
B. Because they make words in the middle of mathematical equations
C. Because they can be used in place of numbers
D. Because they are unknown quantities



Answer :

Final answer:

Variables in mathematical equations are letters representing quantities that can vary or are unknown, crucial for problem-solving and representing relationships between quantities.


Explanation:

Variables in mathematical equations are letters used to represent quantities that can vary or are unknown. They are essential in algebra and other mathematical areas to generalize problem-solving and represent relationships between quantities. For example, in an equation of a line with variables x and y, these letters can take on different values to describe the line's properties.


Learn more about Mathematics here:

https://brainly.com/question/41753146