Given that D, E, and F are the midpoints of their respective sides, and AC = 24, what’s the length of line segment DE? Question options:
2 units
12 units
4 units
6 units

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth