A bag has 3 red flying discs I blue flying discs 1 speckled flying discs 1 yellow flying discs and 5 black flying discs you randomly pull a flying disc from the bag keep it out and then pull another one out. What is the probability of getting a black then a black

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

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Find the slope of the line passing through a pair of points