The center of an ellipse is (1,6). one focus of the ellipse is (-2,6). one vertex of the ellipse is (10,6)
what is the equation of the ellipse in standard form?

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i

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.