The equation |–x – 4| = 8 will have two solutions. the equation 3.4|0.5x – 42.1| = –20.6 will have one solution. the equation startabsolutevalue startfraction one-half endfraction x minus startfraction 3 over 4 endfraction endabsolutevalue equals 0. = 0 will have no solutions. the equation |2x – 10| = –20 will have two solutions. the equation |0.5x – 0.75| + 4.6 = 0.25 will have no solutions. the equation startabsolutevalue startfraction 1 over 8 endfraction x minus 1. endabsolutevalue equals 5. = 5 will have infinitely many solutions.

Find the missing part. use an improper fraction for your answer.

Combine like terms to make a simpler expression 3z+z

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.