Write the system first as a vector equation and then as a matrix equation. 5 x 1 plus x 2 minus 3 x 3 equals 7 2 x 2 plus 9 x 3 equals 0 Write the system as a vector equation. Select the correct choice below and, if necessary, fill in any answer boxes to complete your choic

Step-by-step explanation:

The system of equations in vector form is

And can be written in matrix form as

With three unknowns in two equations, the system has infinitely many solutions.

14

step-by-step explanation:

14 x 3 = 42

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation: