Your class is going on a field trip. twenty-four students have turned in their permission slips so far. this is 80% of the students in class. how many students are in the class?

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

Піf x = y and y= z, which statement must be true? оа. -x = -2 b. x= z ос. —x = 2 od. 2= x