Quadratic equation I need help

Round 0.866 to the nearest hundredth

(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

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?