If xy = 4, which is equivalent to y(x-4)(x+2) A. 5x
B. 5
C. x^2 -2x + 8
D. 4x - 8 - 8y

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /