In this question, angle 5 and angle 2 are linear pair. And angles of linear pair are supplementary angles .
Therefore

And sum of interior angles of a triangle is 180 degree, that is

SInce both the equations have 180 in the right side, left side of both equations are equal too . That is

Which gives

So the correct option is A .
0.05x+0.12 (19660-x)=2060
Solve for x
X=4274.29 at 5%
19,660−4,274.29
=15,385.71 at 12%
Answer:
28 units^2
Step-by-step explanation:
Yes I ca-n YOU eritemul raționale as