Tìm tọa độ của vecto u=(3;x;y) tromg cơ sở {(0;1;-1), (1;2;-2); (2;-1;2)}​

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

What is negative 3/9 times negative 2/8 ?

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14