An estate of $447,000 is left to three siblings. the eldest receives 3 times as much as the youngest. the middle sibling receives $12,000 more than the youngest. how much did each receive?

the eldest sibling received $__, the middle sibling received $ and the youngest sibling received $

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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step-by-step explanation: the answer for wha if rt is 10 centimeters long, and wha is st? it’s 6

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