3/7 of students at a school are boys . if there are 2282 students at the school. how many are girls .

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.

On monday, the water was shut off 3 times for 1/4 hours, 2/3 hours, and 1-3/4 hours, respectively. what was the tireless number of hours the water was off?