Aplica el método de eliminación Gaussiana

What is the remainder when 2872 is divided by 76? a) 51 b) 57 c) 60 d) 63

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?

If angle b measures 25°, what is the approximate perimeter of the triangle below? 10.3 units 11.8 units 22.1 units 25.2 units