Cosx sec^2x tanx - cosx tan^3x = sinx

Solve for x, y, and z. show all steps.

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

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