Help Siobhan rotates a right triangle 90° counterclockwise about the origin.

How does the orientation of the image of the triangle compare with the
orientation of the preimage?

Ps
I put the last one under history SORRY I hit the wrong one

Perform the indicated operation. 8/a - 6/a + 7/a

Polygon mnopq is dilated by a scale factor of 0.8 with the origin as the center of dilation, resulting in the image m′n′o′p′q′. the coordinates of point m are (2, 4), and the coordinates of point n are (3, 5). the slope of is .

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.