22 + [-2 (19 – x)] for x = 7

-2

Step-by-step explanation:

22+[-2(19-7)]

22+[-2(12)]

22+(-24)

-2

-2

Step-by-step explanation:

22 + {-2 (19-7))

step 1 distribute -2 to 19 and -7

-2x19=-38

-2x-7-=14

22+14-38

22+14-38

36-38=-2

the first question mark is 6 and the second question mark is 26 (the square root)

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'.