Answer:
guess and check
Step-by-step explanation:
Linear equation systems usually have two or more variables to find.
The values for these variables can be found by different methods, some of them are indeed graphing, substitution and with matrices.
So these are correct options that are used to solve linear systems of equations.
On the other hand, the guess and check method is not used to find the solution of these systems, since the more variables the system has the more difficult it is to guess the answer,<u> the graphic and mathematical methods are more effective and reliable.</u>
Answer:
72 books will fit on the shelf
Answer:
your answer would be 21
~hope this is the right answer, have a great day/night~
Step-by-step explanation:
A
Find the two intersections of the lines. The value of x of the intersections will satisfy the system of equations.
Brainliest pls!