Urgent geometry will give !

seth is using the figure shown below to prove pythagorean theorem using triangle similarity.

in the given triangle abc, angle a is 90° and segment ad is perpendicular to segment bc.

question: if db = 9 and dc = 4, find the length of segment da. show your work.

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?