Itâs a cost-benefit analysis: If it costs you 3 hours weekly to do the wash, but costs you $30 to send it out â that is $10 per hour. But if you bill more than that at your business â or stand to get a raise if you use those three hours to learn new skills, earn a degree, etc., it is worth the investment.
Coordinate Rules for Rotations. In general, we can state the following coordinate rules for (counterclockwise) rotations about the origin: For a rotation of 90o: (x, y) --> (ây, x) For a rotation of 180o: (x, y) --> (âx, ây) For a rotation of 270o: (x, y) --> (y, âx)
Symbols (x, y)â (- 180Â° Rotation Example To rotate a point 180Â° counterclockwise 1 (5, 2) 1 '(-5, -2)180Â°y0 x $BJ about the origin, multiply the x-and y-coordinates by - 1.or example a rotation of -90Â° about the origin is a rotation 90Â° clockwise about the origin. StudyTip 360Â° Rotation A rotation of 360Â° about a point returns a figure to its original position. That is, the image under a 360Â° rotation is equal to the preimage.