What is 412, 825 round to the nearest ten?

Hi my sisters and brothers can tell me the answer because i don’t understand the question

What is the relationship between all triangles that can be drawn given the same three angles

What are the solution(s) to the quadratic equation x2 – 25 = 0? o x = 5 and x = -5ox=25 and x = -25o x = 125 and x = -125o no real solution