Có 1 cái cân đĩa với 2 quả cân loại 7gr và 2gr. Với 3 lần cân, làm thế nào để sử dụng các dụng cụ trên chia 140gr muối thành 2 phần nặng 50gr và 90gr?

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

Can someone me and do the problem plz so i can understand it more better