Una editorial va a lanzar al mercado tres ediciones 12 3 L L yL , de libros de bolsillo. Los costes por unidad de cada libro son 7, 5 y 6 euros, respectivamente. El coste total de las tres ediciones asciende a 37500 €. Se sabe que el número de ejemplares de L3 es igual a dos séptimos del número de ejemplares de L2 , y que, si al triple del número de ejemplares de L1 se le suma el número de ejemplares de L3 , se obtiene el doble del número de ejemplares de L2 . Calcula cuántos libros de cada tipo se han editado.

the answer is c. 23/3

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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rauschg

rauschg · hand

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what i would say the best answer is a. 40.5