12. What is the measure of the smaller angle formed by the line and ray in the figure below?

Acircular hot tub located near the middle of a rectangular patio has a diameter of 48 inches. the patio measures 11 feet by 6 feet. what is the area of the patio that is not covered by the hot tub?

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer