An Image has point W'(7,-3), and the pre-Image has point W(21,-9). What scale factor was used to dilate the pre-Image? A. 3
B. 9
C. 1/3
D. 1/9​

To complete your spring schedule, you must add calculus and physics. at 9: 30, there are three calculus sections and two physics sections; while at 11: 30, there are two calculus sections and three physics sections. how many ways can you complete your schedule if your only open periods are 9: 30 and 11: 30?

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Two lines parallel to the same plane are parallel to eachother