Gravel is being unloaded from a truck and falls into a pile shaped like a cone at a rate of 16 cubic feet per minute. the radius of the cone base is 4 times the height of the cone. find the rate at which the height of the gravel changes when the pile has a height of 7 feet.

The chart below shows the distribution of weeds in yard

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

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