Mathematics, 07.12.2019 01:31 MayFlowers
For the first 5 hours of a trip, a plane averaged 120 kilometers per hour. for the remainder of the trip, the plane traveled an average speed of 180 kilometers per hour. if the average speed for the entire trip was 170 kilometers per hour, how many hours long was the entire trip? a. 15b. 20c. 25d. 30e. 35
Answers: 3
Mathematics, 21.06.2019 13:30, ellyssabailey2006
Volume of a cylinder with a radius of 13 in and height of 30 in
Answers: 1
Mathematics, 21.06.2019 19:30, taylor511176
Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?
Answers: 1
Mathematics, 21.06.2019 20:50, brea2006
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.
Answers: 3
For the first 5 hours of a trip, a plane averaged 120 kilometers per hour. for the remainder of the...
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