A troupe of 11 dancers is going to line up on stage. Of these dancers, 6 are wearing black and 5 are wearing red. A dancer wearing black must be in the first position and they must alternate between colors. In how many ways can the dancers line up?

Which two properties of equality could zoe use to finish solving for x? the equation is 3x - 4 = -10 for x so a either the addition or subtraction property of equalityb ether the multiplication or division property of equality c ether the addition or division property of equality d ether the subtraction or division property of equality just a simple a b c or d plz.