![\left[\begin{array}{c}x&y\end{array}\right] = \left[\begin{array}{cc}-4&1\\3&2\end{array}\right]^{-1}\left[\begin{array}{c}9&7\end{array}\right]=\dfrac{1}{11}\left[\begin{array}{cc}-2&1\\3&4\end{array}\right]\left[\begin{array}{c}9&7\end{array}\right]=\left[\begin{array}{c}-1&5\end{array}\right]](/tpl/images/0425/3942/e254f.png)
juan solves the system of equations by forming a matrix equation.
−4x+y=9
Mathematics, 19.12.2019 03:31 damonsmith201615
30
juan solves the system of equations by forming a matrix equation.
−4x+y=9
3x+2y=7
he multiplies the left side of the coefficient matrix by the inverse matrix.
how does he proceed to the solution?
Answers: 1
Another question on Mathematics
Mathematics, 21.06.2019 23:00
I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )
Answers: 1
You know the right answer?
30
juan solves the system of equations by forming a matrix equation.
−4x+y=9
juan solves the system of equations by forming a matrix equation.
−4x+y=9
Questions
Mathematics, 23.04.2020 03:35
English, 23.04.2020 03:35
Chemistry, 23.04.2020 03:36
History, 23.04.2020 03:36
Biology, 23.04.2020 03:36
Biology, 23.04.2020 03:36
Mathematics, 23.04.2020 03:36
Mathematics, 23.04.2020 03:36
Physics, 23.04.2020 03:36
