The graph of a proportional relationship passes through the points (15,3) and (5,y). find y.

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?