Which property would allow you to use mental computation to simplify the problem 23 + (7 + 9)?

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

Which best describes the construction of a triangle if given the segment lengths of 2 cm, 3 cm, and 5 cm? a) unique triangle b) cannot be determined c) triangle not possible d) more than one triangle

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13