20. A circular running track has a diameter of 25 meters. How many laps must be completed to run 1900 meters? Give your answer correct to one decimal place.

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

The graph shows the distance kerri drives on a trip. what is kerri's speed . a. 25 b.75 c.60 d.50

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how