Aschool principal ordered 1,000 pencils .he gave equal number to each of 7 teachers until he had given out as many as possible . how many pencils were left?

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

What is not true about kl and mn? what is mn? (show your work)

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%