What is the average of 1,2,4,and 9

4 is the average of these numbers. Hope I helped ya out

The answer is 4
to find an average you add all the given digits and then divide the sum of all those digits by the number of digits given. i.e
1+2+4+9=16

16/4=4

the image of (6, 9) under a dilation is (4, 6). the scale factor is

b. 2/3