Nathan used the model below to find the sum of two mixed numbers. Which equation shows the sum?

The triangles are similar. what is the value of x? show your work.

Just tell me how to set up the equation.

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