Write in scientific notation. 0.000000459

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 similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

Which is the focus of a parabola with equation y2=4x