Asquare has symmetry with respect to a line containing a median of the square. always sometimes never

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9