X^2+10x+19=0 complete the square PLEASE EXPLAIN

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

What numbers are included in the set of integers? what numbers are not included?

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000