PLZ ANWSER WILL MAKR BRAINEST

Find the center and the radius of the circle with the equation: x^-2x+y^2+4y+1=0

How does thoreau defend his approach in the second paragraph of "economy" inwalden? -he uses the word "t" because he feels it sounds more interesting-he does not use first-person point of view because his is a fictional account-he uses first-person point of view to get his readers' attention-he uses the word "t" for the sake of sincerity and honesty.

4friends evenly divided up a nn-slice pizza. one of the friends, harris, ate 11 fewer slice than he received.