Is the point a solution to the system of equations? . x + y = −3 2x − y = 6. (2,−5) (1,−4)

Write a division equation you could use to find a, the number of miles ava is in charge of. what is the value of a? write your answer is simplist form

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.

What does independent variable and dependent variable mean in math?