Triangle ABC has vertices A(0, ), B(12,7), and C(12, 0). If circle Ois circumscribed around the triangle, what are the coordinates of the center of the circle?
(6,3.5)
(6,4)
(8,2)
(12, 3.5)

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Someone which statements are true? check all that apply.

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?