Given the matrix: A=[2 4 5 -8]
The sum of the elements ts in row 1 is: ANSWER IS 7!
The sum of the elements in colum2 is: ANSWER IS -3!

THE NEXT QUSTION
Element a²¹ in the matrix is: ANSWER IS 4​

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

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