When scanning the road, glance away from the road ahead for a. at least one second b. no more than one second c. at least two seconds d. no more than two seconds

Which is the highest level of the hierarchy of needs model? a. humanity b. intrapersonal c. team d. interpersonal

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?

Jenny wants to create an animated short video to add to her website. which software will she use to create this animated video?