What is 50% of 30? anyone

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

(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