If the value of x-y is negative, and x and y are both positive, what can you conclude about the values of x and y?

I can conclude that x is of less value than y, because that is how it is possible for x-y to be negative when both x and y are positive integers. If x = 4 and y = 3, then x-y=1, which is not negative. However, if x = 3 and y = 4, then x-y = -1, which fits the criteria for the solution to this problem. Experiment with other numbers if you would like. 
Hope that helped answer your question!

For Problem 10: side VS is approximately 7.07 but the exact number is 7.07106781187 which is the square root of 50. Side VS and ST are the same side length. VU and TU are also the same side length as each other, their length is 13. For 11:  side ST and VS is the square root of 145, which in exact form is 12.0415945788, and sie VU and UT is the square root of 130, which in exact form is 11.401754251

Step-by-step explanation:

In order to get sides ST and VS you have the side lengths 5 and 5 for each line, so the pythagorean theorem is a^2 + b^2 = c^2 so 5^2 + 5^2 is 25+25=50 You then get the square root of 50 to find C because 50 is C^2 and the square root of 50 is 7.07106781187. Use this for all the rest of the sides if you are still confused.