Step-by-step explanation:
add up both equations
2x -y + 3x + y -13 = 0 (y will eliminate -y)
5x -13 = 0
5x = 13
x = 13/5 now use this value to find y
2 × 13/5 -y - 4 = 0
26/5 - y -4 = 0
26/5 - 4 = y
6/5 = y
Answer:
Step-by-step explanation:
<u>I'm assuming the angles are in degrees.</u>
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The correct answer should be B) Pythagoras
That is based on the fact hat Pappus and Desargues are famous for being pioneers in projective geometry while Pythagoras wasn't, even though he was a mathematician.