4computers were chosen at random from dell's and mac's what is the probability that:

a) all 4 will be a dell=

b) at least 3 will be a mac=

c)exactly 3 will be a dell=

Kylie explained that (-4x+9)^2 will result in a difference of squares because (-4x+9)^2 (-4x+9)^2 =(-4x)^2+(9)^2=16x^2+81

Is each relation a function? if so, state whether it is one-to-one or many-to-one. 3. (-4,7), (-3,5), (1,4), (3,-8), (5,-11) 4. (-4,8), (-2,4), (0,1), (2,4), (4,8) 5. (-2, 1), (-2,3), (0,-3), (1,4), (3,1)

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12