Answer:

Step-by-step explanation:
Consider triangles BKE and DKA. In this triangles:
as vertical angles;
as alternate interior angles (lines BC and AD are parallel and BC is a transversal);
as alternate interior angles (lines BC and AD are parallel and BE is a transversal).
Thus triangles BKE and DKA are similar by AA theorem. Similar triangles have proportional sides lengths:

Thus, 
Since AD=BC and BC=BE+CE, we have that 4BE=BE+EC, EC=3BE. Hence, the ratio BE to EC is

A = 5 / 2 a^2 square root over 5 + 2 square root of 5
hopefully this helps you out
Answer:
3,900
Step-by-step explanation:
312 divided by 0.08 = 312
Answer:
The answer is the second one , 0=5 , no solutions .
Step-by-step explanation:
Good luck