All relations are functions true or false

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.

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.