Find p(a or b), if the events are disjointed. p(a) = 9/25 p(b) = 9/25

Step-by-step explanation:

We know that when two events are disjoint then their intersection is empty.

if  A and B are disjoint then

Also, we know that the probability of getting A or B is given by :

8

step-by-step explanation:

this is a subtraction problem.

10 - 2 = 8

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.