11. Which matrix represents the system of equations below? (I point) 8x-9y+13z=11. -8x-5y+5z=15 3x+4y-8z=-10
i need help asap / i will mark you brainlist

Flashback to semester a. are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr? show your work.

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Solve the given system of equations. 2y= -x+9 , 3x-6= -15