Hector rolls a 10-sided die 25 times. Let X represent the number of times out of 25 that he rolls a 7. What is the standard deviation of X?
1.5
2.25
2.5
3.75
1.25

How do you convert 1.27 to a percentage

Do,h = (7, 9) (14, 18) the scale factor is

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.