Consider the following equation

0=x^2-10x-27

complete each statement about the solutions to the equation.
the negative solution is between
(a ) -2,-13,-3,12
(b)-1,-11,-2,-12

the positive solution is
(b)11,2,12,1
(c)3,12,13,2

The negative solution is between -3 and -2

The positive solution is between 11 and 13

Step-by-step explanation:

we have

The formula to solve a quadratic equation of the form is equal to

in this problem we have

so

substitute in the formula

therefore

The negative solution is between -3 and -2

The positive solution is between 11 and 13

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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