(10x4 - 4x3 - x2 - 6x + 8) + (-3x4 + 6x3 - 2x2 + 8x - 4)

34

Step-by-step explanation:

(10)(4)−(4)(3)−2x−6x+8+(−3)(4)+(6)(3)−(2)(2)+8x−4

= 40+−12+−2x+−6x+8+−12+18+−4+8x+−4

Combine like terms:

= 40+−12+−2x+−6x+8+−12+18+−4+8x+−4

= (−2x+−6x+8x)+(40+−12+8+−12+18+−4+−4)

= 34

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'.

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24