Lat year middletown middle school had 618 students enrolled. This year there 581 students enrolled. What is the percent decrease in the student population at middletown middle school.

The angle of elevation from point a to the top of a cliff is 38 degrees . if point a is 80 feet from the base of the cliff , how high is the cliff ?

16x^2-16x=5 solve the equation by completing the square

Arectangle has a perimeter of 20 cm. the length, x cm, of one side of this rectangle is uniformly distributed between 1 cm and 7 cm. find the probability that the length of the longer side of the rectangle is more than 6 cm long.