Question

The difference between twice Bill's age and Carolos' age is 26. The sum of Anna's age, three times Bill's age and Carolos's age is 92. The total of the three ages is 52.

1. write a system of 3 equations with 3 unknowns to represent this situation.
2.write a matrix equation to represent the system.
3.solve the matrix equation. Identify A^-1. No decimals
4.how old is each person?

Answer 1

The difference between twice Bill's age and Carlos's age is 26. The sum of Anna's age, three times Bill's age, and Carlos's age is 92.

Answer 2

7 -3 1

3 2 1

| -6 -4 -

21

Which of the following describes the solution to the system of equations?

O

consistent

dependent

inconsistent

independent

: