I don´t get it plz help asap i only have a few min. Complete this square to find the vertex of this parabola

x²-4y 12x+ 68=0

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(an explanation would mean the world in help!!!)

Select the lengths in centimeters that would form a right triangle

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x