Describe the plane perpendicular to each of the following axes at the given points with a single equation or a pair of equations a. the z-axis at (-4,9, -2) b. the x-axis at (5, 3,2) c. the y-axis at (6,9,-3) a. choose the correct equation of a plane perpendicular to the z-axis. b. choose the correct equation of a plane perpendicular to the x-axis. ○ a. z=2 -axis. c. choose the correct equation of a plane perpendicular to the y

If you could answer these your a life saver

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables

Given right triangle abc, what is the value of tan(a)?