MCQ 511 MarkIf $12 x+13 y=29$ and $13 x+12 y=21$ then the value of $x+y$ isA1B25✓2D50AnswerCorrect option: C. 22View full question & answer→
MCQ 521 MarkFind $m$ if value of determinant $\left|\begin{array}{cc}m & 2 \\ -5 & 7\end{array}\right|$ is 31.A14✓3C28D21AnswerCorrect option: B. 33View full question & answer→
MCQ 531 MarkExpress the following information in mathematical form using $x$ and $y$ variables: one number is 5 more than seven times the other number .A$x-5 y=7$✓$x-7 y=5$C$x+7 y=5$D$x-7 y=-5$AnswerCorrect option: B. $x-7 y=5$$x-7 y=5$View full question & answer→
MCQ 541 MarkEquation of $X$ axis is _______ .A$x=0$B$x=b$✓$y=0$D$y=a$AnswerCorrect option: C. $y=0$$y=0$View full question & answer→
MCQ 551 MarkBy Cramer's rule the value of $x$ is ________ .A$\frac{ D }{ D _x}$✓$\frac{ D _x}{ D }$C$\frac{ D _y}{ D }$D$\frac{ D }{ D _y}$AnswerCorrect option: B. $\frac{ D _x}{ D }$$\frac{ D _x}{ D }$View full question & answer→