What is the length of a segment with endpoints at (–2, 5) and (4, 5)?

Simplify the expression. -2/5(10+15m-20n)

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

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