SURVEYING Vista county is setting aside a large parcel of land to preserve it as open space. The county has hired Meghan’s surveying firm to survey the parcel, which is in the shape of a right triangle. The longer leg of the triangle
measures 5 miles less than the square of the shorter leg, and the hypotenuse of the triangle measures 13 miles less than
twice the square of the shorter leg. The length of each boundary is a whole number. Find the length of each boundary.

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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answers

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step-by-step explanation:

1. supplementary angles

2. acd and bcd

step-by-step explanation:

the solution, from the graphing of the two lines, is (3,2), i.e., x = 3, y = 2.