Two knights are riding towards each other from opposite sides of a 1 km/hr field. They began riding at 1:00 and met at 1:15. One of the knights rode 1 km/hr faster than the other. Find their speeds. PLEASE ANSER QUICKLY WITH REAL ANSWER

15 points ! ~ see if you know the answer to both you!

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

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%