Well, there are a few types of planetary movement, a planet moves in an elliptical and orbital pattern that can be observed by keeping watch on how many times a year you see it in the sky; with this information you will be able to predict its movement patterns by the frequency of orbital movement as well as the interval between each appearance.
Oh and BTW next time, try posting a SCIENCE question in the Physics category?
The answer to this problem is 11 because I did the inverse the inverse of subtraction is addition so I added 7+4 that gave me 11 than I subtracted 11-7 that gave me 4 so x=11
<span>"Prime meridian" marks the beginning of longitude.And goes east and west around the equator with 180 (the middle) being in the middle of the ocean.</span>
