Evaluate the expression when a= 1/4 and b= 6
5b/32a2=?

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.

Can someone answer this question? : )

Sketch one cycle if the cosine function y=2cos2theta