Amuseum has 75 carvings in its collection. it has 10 more pieces of pottery than carvings. it has 3 times as many paintings as pieces of pottery. how many paintings does the museum have?

Bring the fraction a/a-4 to a denominator of 16-a^2

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.

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