What is 90* 1000 then - 8 * 40

Convert the cartesian equation (x 2 + y 2)2 = 4(x 2 - y 2) to a polar equation. choices: r4 = -4r2 r2 = 4cos2θ r2 = 4sin2θ

Module 10 coordinate proof using slope and distance answers is quadrilateral abcd a parallelogram? explain how you know.

How do i do this activity, is appreciated