Find x1 and x2.

left bracket Start 2 By 2 Matrix 1st Row 1st Column negative 4 2nd Column 1 2nd Row 1st Column 5 2nd Column 4 End Matrix right bracket left bracket Start 2 By 1 Matrix 1st Row 1st Column x 1 2nd Row 1st Column x 2 End Matrix right bracket plus left bracket Start 2 By 1 Matrix 1st Row 1st Column 11 2nd Row 1st Column negative 19 EndMatrix right bracket equals left bracket Start 2 By 1 Matrix 1st Row 1st Column negative 11 2nd Row 1st Column 40 End Matrix right bracket

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b