True or False: The perpendicular bisector of the base of any isosceles triangle also bisects another side of the triangle.

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

What is the slope of any line parallel to the line 8x+9y=3 in the standard (x,y) coordinate plane?

What is the maximum of the sinusoidal function