HELP NOW 50 POINTS! Given the system below, SELECT all terms that will be
eliminated by adding the equations together.
-X + y = -1
2x - y = 0

-x
2x
y
-y
-1
0

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

Algebraically prove that a clockwise and counterclockwise rotation of 180° about the origin for triangle abc are equivalent rotations.

Graph a triangle (xyz) and reflect it over the line y=x to create triangle x’y’z’. describe the transformation using words. draw a line segment from point x to the reflecting line, and then draw a line segment from point x’ to the reflecting line. what do you notice about the two line segments you drew? do you think you would see the same characteristics if you drew the line segment connecting y with the reflecting line and then y’ with the reflecting line? how do you know?