3(4x - 4) - 7x, when simplified, is 5x - 12. So your answer would be A, or the first one.
THE CORRECT ANSWER TO THAT IS D
7x+4y=39 , 2x+4y=15
X-5 and y -1
Answer:
Obtuse
Explanation:
Obtuse: The altitude connected to the obtuse vertex is inside the triangle, and the two altitudes connected to the acute vertices are outside the triangle.