Can someone help me with this

Describe the relationship between the angles of similar triangles and the sides of similar triangles

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

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