Mathematics, 30.11.2020 20:10 ryliekarenbowers
What number would you multiply the second equation by in order to eliminate the x-terms when adding to the first equation? What number would you multiply the second equation by in order to eliminate the y-terms when adding to the first equation?
Answers: 2
Mathematics, 21.06.2019 19:30
Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have
Answers: 1
Mathematics, 21.06.2019 19:30
Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)
Answers: 1
Mathematics, 21.06.2019 20:50
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
What number would you multiply the second equation by in order to eliminate the x-terms when adding...
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