Find the volume of the prim. Round the nearest tenth of necessary. PLS HELP I put 15

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.

Which math sentence can be used to determine if the triangle is a right triangle?

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