Step-by-step explanation:
√a is defined only when a >= 0.
Therefore for √4x * √(x + 2) to be defined, both 4x and x + 2 must be non-negative.
When 4x >= 0, x >= 0.
When x + 2 >= 0, x >= -2.
x >= 0 and x >= -2, therefore we have x >= 0. (D)
(L,L,L),(L,L,W),(L,W,L),(L,W,W),(W,L,L),(W,L,W),(W,W,L),(W,W,W) 8 total
A pool that is 5/10 full has less water.
5/10 = 50%
9/10 = 90%