Show that: (a) n∪i=1 Ai is closed if all Ai the are;

b) ∩i∈∧ Ai

is closed if all the Ai are;

c) ∞∩i=1 ki

is not empty if the Ki are non empty closed intervals in R and

Ki ⊇ Ki+1 for all i ≥ 1. (Ai ⊆ Rm for all i).

Which statements are true of the graph of h(x) = ^3 square root of x-4 ? check all that apply.the domain of h(x) is the set of all real numbers. the range of h(x) is the set of all real numbers. for all points (x, h( h(x) exists if and only if x – 4 0. the graph of h(x) is a translation of f(x) down 4 units. the graph of h(x) intercepts the x-axis at (4, 0).

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30

With this question, the answer with the red arrow is incorrect!