Astudent claims that a rotation of 180° about the center of a regular polygon carries the polygon onto itself.
which statement best describes the student's claim?
a
the student's claim is true for all regular polygons.
b
the student's claim is not true for any regular polygon.
c
the student's claim is true for regular polygons with an odd number of sides.
d
the student's claim is true for regular polygons with an even number of sides.

step-by-step explanation:

c.the student claim is true for a regular polygons with an even number of sides

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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