The mean of six numbers is 12.five of the numbers are 11,7,21,14 and 9.calculate the sixth number​

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.

Pls as soon as ! will award brainliest and 20 ! also the answer is not 22.5 degrees! find the value of x in each case: