Chareese reflects figure RSUT over the y-axis and then rotates the reflected figure 180degree about the origin, resulting in figure A. She states that R S U T is congruent to Z Y W X. Which best describes the accuracy of her congruency statement? On a coordinate plane, figure A with points Z Y W X has points (1, 2), (4, 1), (3, 4), (0, 4). Figure R S U T has points (1, negative 2), (4, negative 1), (3, negative 4), (0, negative 4).
Accurate. A reflection will change the direction the vertices trace around the figure. A rotation preserves the change.
Accurate. A reflection preserves the direction the vertices trace around the figure. A rotation changes that direction.
Inaccurate. The correct congruency statement is R S U T is congruent to Z X W Y.
Inaccurate. The correct congruency statement is R S U T is congruent to X W Y X.

.24

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the probability is   .24

the first player had the highest probability of getting a silver marble

the game could be made fair by adding back the marble that was drawn after each draw

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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