Mathematics, 25.09.2019 10:20 eshavaggar
Why is sine and cosine defined at 90 degrees? it makes a 90-90-0 triangle which makes no sense tome.
Answers: 1
Mathematics, 21.06.2019 13:00
âabc is reflected across the x-axis and translated 2 units up to give the image âa'b'c' with coordinates a'(1, 1), b'(2, -1), c'(2, 1). what are the coordinates of the preimage âabc? a. a(-1, 1), b(-2, 3), c(-2, 1) b. a(1, 1), b(2, 3), c(2, 1) c. a(1, -3), b(2, -1), c(2, -3) d. a(1, -3), b(2, -5), c(2, -3)
Answers: 2
Mathematics, 21.06.2019 18:00
A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees
Answers: 2
Mathematics, 21.06.2019 20:50
An automobile assembly line operation has a scheduled mean completion time, Îź, 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
Why is sine and cosine defined at 90 degrees? it makes a 90-90-0 triangle which makes no sense tome...
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