Final answer:
The question relates to using the inverse of a coefficient matrix to solve a system of equations, involving algebraic manipulation and substitution of known values to obtain a numerical solution.
Step-by-step explanation:
The student is asking how to use the inverse of a coefficient matrix to solve a system of equations. The process involves multiple steps: firstly, identifying the known values from the equations, and secondly, choosing the appropriate equation to isolate the unknown variables. Once the equation is selected, the student needs to manipulate the algebraic expressions carefully, using the inverse matrix to solve for the unknowns.
Moreover, after obtaining the algebraic solution, it is essential to substitute the known values along with their units into the equation to find the numerical answer. Finally, the solution has to be checked for reasonableness, ensuring that the final answer makes sense both numerically and within the context of the problem.