25 is the greatest common factor of 75 and 25. 3 x 25 = 75.
So you subtract 180 from 90 you get you answer then you will divide it by 55 and your remaining answer which you will get will be x
You were right, its the second choice CA=CB+BA
Answer:
3.16 units
Step-by-step explanation:
It has been given that the triangles JKL and the triangle RST are congruent.
That implies that, the length of the side JK, KL, and JL is equivalent to the length of the sides RS, ST, and RT respectively.
Now, to find the length of JK we need to find the length of the side RS. The coordinates of the points R and S are
and
.
The length of the side RS is equal to the distance between point R and S.
RS 



Now that we have the length of the side RS, and the triangles JKL and RST are congruent therefore, the length of the side JK is 3.16 units.