Find the length of the third side. If necessary, round to the nearest tenth.
11
20

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

Find the area of a parallelogram with base 15 yards and height 21 2/3

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