Which of the following statements is true? (A) The greatest prime factor of 18 is 9. (B) The greatest prime factor of 21 is 3.
(C) The greatest prime factor of 4 is 2
(D) The greatest prime factor of 34 is 11.​

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

To make a monster appear large in a movie, a human actor wore a costume and walked through a scale model of a city. the scale used was 1 inch = 15 feet. the actor is 60 inches tall. how tall does the monster appear in the movie? question 5 options: 720 feet 75 feet 4 feet 900 feet

The box plots show the average speeds, in miles per hour, for the race cars in two different races. which correctly describes the consistency of the speeds of the cars in the two races?