#6 points possible: 10. total attempts: 5
on a bicycle, zoe rides for 2 hours and is 12 miles from her house. after
riding for 4 hours, she is 22 miles away.
what is zoe's rate?
miles per hour preview
#7 points possible: 10. total attempts: 5

Of four points are collinear, they are also coplanar

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.

Factor the polynomial, if possible. if the polynomial cannot be factored, write prime. 9n^3 + 27n^2 – 25n – 75