Unless they are opposite rays, then yes, they will always form a line.
Answer:

Step-by-step explanation:
The Law of Cosines works for any triangle and is given by:
, where
,
, and
are the sides of the triangle and
is the angle opposite to
.
In the given triangle, assign the variables:
Substituting these variables, we have:

Answer:
2,3,4,5,6,7,8,9,10, that's it easy
$13 is your answer. Multiply 3x5 then subtract the total from 28