Here are 10 values of a variable x. find the variance using the formula u=x-20
18.9
20.7
19.3
20.1
21.3
19.6
20.5
20.9
18.8
20.8

Which of the following transformations will make coincide with ? a. counter-clockwise rotation 90º about a, followed by a translation 5 units to the right b. translation 5 units to the right, followed by a reflection across the y-axis c. translation 5 units to the right, followed by a reflection across the x-axis d. translation 1 unit up and 5 units to the right, followed by a reflection across the x-axis