Let a = { 0, 1, 2, 3, 4, 5, 6 }, let b = { 0, 1, 2, 3, 4, 5, 6, 7, 8 }, and let r be the relation from a to b given by "the greatest common divisor of a and b is 2." [note: "greatest common divisor" is sometimes called "highest common factor".] list the elements of r.

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron (not a pyramid). the pyraminx shown below has edges 15\,\text{cm}15cm15, space, c, m long and vertical height h=12.2\,\text{cm}h=12.2cmh, equals, 12, point, 2, space, c, m. the triangle drawn with dashed lines is a right triangle. what is the distance rrr? round your answer to the nearest tenth.

When creating a presentation in libre office impress, where does the editing of slides take place? a. the slides panel b. the center panel c. the tasks panel, under the masters pages tab d. the tasks panel, under the layouts tab

Write the command that can be used to answer the following questions. (hint: try each out on the system to check your results.) a. find all files on the system that have the word test" as part of their filename. b. search the path variable for the pathname to the awk command. c. find all files in the /usr directory and subdirectories that are larger than 50 kilobytes in size. d. find all files in the /usr directory and subdirectories that are less than 70 kilobytes in size. e. find all files in the / directory and subdirectories that are symbolic links. f. find all files in the /var directory and subdirectories that were accessed less than 60 minutes ago. g. find all files in the /var directory and subdirectories that were accessed less than six days ago. h. find all files in the /home directory and subdirectories that are empty. i. find all files in the /etc directory and subdirectories that are owned by the group bin."