Please help the ball is released from his fingertips at a point 4.5 feet from the ground and reaches a maximum height of 12 feet before sailing through the hoop 15 feet away. determine the height of the basketball hoop.
use the formula f(x)=a(x-h)^2+k to determine the height of the basketball hoop. round your answer to three decimal places.

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?

With alll of except for the 2 that i did already