If x-2 is one of the factors of x^4-kx^2+4, find the value of k.

Which choice represents the sample space ,s for this event

What is the frequency of the sinusoidal graph?

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