Chemists define the acidity or alkalinity of a substance according to the formula
pH = -log(H), where H is the hydrogen ion concentration, measured in moles per liter.
Solutions with a pH value of less than 7 are acidic; solutions with a pH value of greater than
7 are basic; solutions with a pH of 7 (such as pure water) are neutral.

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).

Which value of c would make he following expression completely factored? 8x+cy

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.