Step-by-step explanation:
Given: X is midpoint of UV and Y is midpoint of VW.
(By mid-point theorem)

Answer:
, or approximately 8.6
Step-by-step explanation:
By creating a right triangle as shown, we see that the given line is the hypotenuse of a right triangle with legs of lengths 5 and 7. By the Pythagorean Theorem, the length of the line is
.
You can make 12, 13, 14, 21, 23, 24, 31, 32, 34, 41, 42, and 43. So 12 numbers
You need to multiply -6 and 3