Abelita and franco had great service during the meal. they would like to tip the server 20 percent. which of these expressions would find the total bill, including tax and gratuity? check all that apply.
(0.2)(11.72)
11.72 – [(0.2)(11.72)]
11.72 + [(0.2)(11.72)]
(1.2)(11.72)

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅