Help with this please ..

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?