Which event is certain?

A) A bowl has 10 red marbles and 12 green marbles. You choose a red marble from the bowl.

B) A bag has pieces of paper numbered from 1 to 100. You choose a number less than 105.

C) A spinner has sections lettered A through H. The spinner lands on the 10th letter of the alphabet.

D) You roll two standard number cubes and the sum of the numbers rolled is 12.

it c

Step-by-step explanation:

hope it help

well the 1 and -1 are always after the 0 and the 0 is inthe middle. s thats what i would guess. but i dont know what a slope of 2 is sorry

step-by-step explanation:

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'.