Congress can print money but cannot issue licenses. States can issue licenses but cannot print money. What constitutional principle explains these contrasting powers? (CS 19) Popular sovereignty Federalism Limited Government Separation of Powers

Use the Gauss-Jordan method to solve the following system of equations. \[ \begin{array}{r}2 x-5 y+3 z=9 \\ 2 x+4 y-\quad z=13 \\ 6 x-6 y+5 z=31\end{array} \] Select the correct choice below and, if necessary, fill in the answer box to complete

Use the Gauss-Jordan method to solve the following system of equations. \[ \begin{array}{l}3 x+7 y-4 z=0 \\ 4 x-4 y+5 z=1 \\ 7 x+3 y+z=1\end{array} \]

\[ A=\left[\begin{array}{ll}2 & 1 \\ 5 & 3\end{array}\right], B=\left[\begin{array}{rr}3 & -1 \\ -5 & 2\end{array}\right] \] \( A B=\left[\begin{array}{ll}2 & 1 \\ 5 & 3\end{array}\right]\left[\begin{array}{rr}3 & -1 \\ -5 & 2\end{array}\right]=\left[\begin{array}{rr}6+\square \\ 15+\square & \square \\ \text { To show that } B \text { is the inverse of } A \text {, we need to show that } A B=I=B A\end{array}\right. \) \( B A=\left[\begin{array}{rr}3 & -1 \\ -5 & 2\end{array}\right]\left[\begin{array}{ll}2 & 1 \\ 5 & 3\end{array}\right]=\left[\begin{array}{rr}6+\square+\square \\ -10+\square & \square\end{array}\right]=\square \)

Thereare 30 learners in class. The teacher has 9 litres of spple juice. the pour 225 milliliters of the apple juice to each learners. How amuch apple Juice 15 left.

1. \( P \) ou \( \bar{P} \) est une tautologie?