Need help please! Find the value of n in the picture above. Leave your answer in simplest radical form.

What is the missing constant term in the perfect square that starts with x^2 -20x

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.

He concluded that a heavier object dropped from the same height as a lighter object will land