The human resources office at your college decided to look at how many years 3 employees had worked at the college. The employees had worked at the college for 4, 9, and 9 years. Find the standard deviation of number of years worked for the employees and round to 1 decimal place if needed.

Is it true or false i’m trying to pass this test so i can leave school

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

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.