All of the following expressions simplify to -5x + 7, except A. (x - 2) - (6 X-9)
B. (5x+1)-(-10 x+6)
C. 4x+ 2 x+7-3X
D. (4x+ 3) + (9x+4)
It’s B

With #! i’ve tried to figure it out but i can’t.

What is the size of the matrix resulting from

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