Derive the equation of the parabola with a focus at (0, −4) and a directrix of y = 4

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.

Estimate the time en route from majors airport (area 1) to winnsboro airport (area 2). the wind is from 340° at 12 knots and the true airspeed is 136 knots. magnetic variation is 5° east.