Mrs. dunn shows her students a data range, which has been named "goals,” covering cells a14 to a25. she tells her students that the data range needs to expand to include additional cells. the range should cover a14 to a45. she tells her students to record the steps needed to extend the range, as shown in the chart.

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)?

The guy wire bd exerts on the telephone pole ac a force p directed along bd. knowing the p must have a 720-n component perpendicular to the pole ac, determine the magnitude of force p and its component along line ac.

Nikki sent flyers in the mail to all houses within the city limits promoting her computer repair service what type of promotion is this and example of