Consider that the following variables have been declared: int David_Tennant; double Matt_Smith; Which of the following statements are valid. Select all that apply.

a. Integer tenth = David_Tennant;
b. (double)David_Tennant = Matt_Smith;
c. Matt_Smith = double(David_Tennant;)
d. Matt_Smith = (double)David_Tennant;
e. Matt_Smith = David_Tennant;

Double eleventh = 11.50;
David_Tennant = eleventh. intValue();

What are compression artifacts? 1) visible defects in the picture caused by the nature of the compression algorithm. 2) numbers that tell a web server how much to compress a picture for faster transmission. 3) invisible defects in the picture preserved by lossless compression. 4) numbers that tell a photo editing program how much to compress a picture for faster transmission.

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)?

What is the process in which the software development team compiles information to determine the final product