The mathematics section of a standardized college entrance exam had a mean of 20.1 and an SD of 5.6 for a recent year. Assume these are well modeled by a Normal distribution. ​a) About what percent of students scored over 29​?
​b) About what percent of students scored under 18​?
​c) About what percent of students scored between 18 and 29​?

The line containing the midpoints of the legs of right triangle abc where a(-5,5), b(1, 1), and c(3, 4) are the vertices.

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?

Ametal rod is 2/5 meters long. it will be cut into pieces that are each 1/30 meters long. how many pieces will be made from the rod?