Why?
Because if you draw a line from A to D to make a triangle AED, then triangle all angle add up equal 180.
Because if you draw a line from A to D to make a triangle AED, then triangle all angle add up equal 180.
Solve the system of linear equations by ellmination. 5x + 9y = -11 3x + 9y = -3 A. (-4,-1) -B. (-1, –4) C. (-4,1) D. (1,-4)
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