My IXL Learning Assessment Ar. GG. 14 Checkpoint: Systems of equations MFL Graph this system of equations and determine the number of solutions. \[ \begin{array}{l}y=-\frac{1}{2} x \\ y=\frac{1}{2} x+4\end{array} \]

7. Use elimination and back-substitution to solve the following system of linear equations. \[ \begin{array}{c}x-y+z=0 \\ 3 x+y-3 z=0 \\ 2 x-2 y+2 z=0\end{array} \]

Diberikan sebuah matriks D berukuran \( 3 \times 3 \) yaitu : \( \left[\begin{array}{lll}1 & 4 & 0 \\ 2 & 5 & 1 \\ 3 & 6 & 2\end{array}\right] \), maka determinan dari matriks D adalah ...

b) \( \begin{array}{l}\frac{x}{3}-\frac{y}{2}=\frac{5}{6} \\ 3 x-\frac{2}{5} y=3 \frac{2}{5}\end{array} \)

4) Which of the following represents the correct factorization of \( x^{2}+7 x+10 \) ? A. \( (x+5)(x+2) \) B. \( (x+10)(x+1) \) C. \( (x+6)(x+5) \) D. \( (x+7)(x+3) \)

Найдите значение выражения \( (\sqrt{5}-\sqrt{3})(\sqrt{5}+\sqrt{3}) \).