Which statements are true about the ordered pair (7, 19) and the system of equations? {2x−y=−5x+3y=22 select each correct answer. the ordered pair (7, 19) is a solution to the first equation because it makes the first equation true. the ordered pair (7, 19) is a solution to the second equation because it makes the second equation true. the ordered pair (7, 19) is not a solution to the system because it makes at least one of the equations false. the ordered pair (7, 19) is a solution to the system because it makes both equations true.

I've been working on this for a few days and i just don't understand, it's due in a few hours. you. the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α.part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part bsuppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i. e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case. part cnow try a numerical problem. what is the direction of the vector w = < -1, 6 > ?