Answer:
A. Yes.
Step-by-step explanation:
Liam used 545 rounded to the nearest 10 is 540.
D. 395 students agreed that, fast food should be introduced.
Answer:
Proved
Step-by-step explanation:

So a median is the line segment joining one vertex to the midpoint of the opposite side. SO do that for all vertices, and see wehre they meet.
9514 1404 393
Answer:
x = 57
Step-by-step explanation:
Where parallel lines are crossed by a transversal, all obtuse angles are congruent and supplementary to all acute angles, which are also congruent.
x = 180 -123
x = 57