Use the variables k and total to write a while loop that computes the sum of the squares of the first 50 counting numbers, and associates that value with total. thus your code should associate 1*1 + 2*2 + 3*3 + + 49*49 + 50*50 with total. use no variables other than k and total.

What is added to the < meta > tag to describe the encoding type?

I'll mark brainliest if answered right! with which feature or menu option of a word processing program can you make an image like this? you can get this image using the option of a word processing program.

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)?