Edoardo thinks of a number between one and 20 that has exactly 5 factors what number is he thinking of?

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

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11