Anew website was reviewed by 58 people. the creator of the website surveyed 8 of the reviewers at random. he asked them to rate the website on a scale from 1 to 10. their ratings are below. 4, 7, 9, 5, 4, 9, 9, 5 assuming that the sample was representative of all reviewers, what was the mean rating of the website for all reviewers? a. 6.5 b. 6.25 c. 4.5 d. 6

Solve the system. -a+4b+2c=-8 3a+b-4c=9 b=-1 a.(0,11) ,-1,2) c.(1,1,-2) d.(2,-1,-1)

Sam makes his sales calls according to a pattern. he travels either north or south depending on the calendar. some of his past trips were as follows: on february 17, april 24, june 10, september 19, and november 3 he drove north. on february 28, may 25, august 22, november 20, and december 18, he drove south. describe sams' pattern. in which direction will sam drive on oct4 and oct 24?

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.