Four out of 9 performers will be chosen to stand in a row on stage. how many ways can the 4 performers stand in a row

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2