If a triangle has two congruent angles, what can be determined about the side lengths opposite of those angles?
(need answer asap, 30 points being given)

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ab=9, and ac=12, find hc.

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

Igor stravinsky tires sells approximately 3,760,000 car tires and 1,200,000 truck tires each year. about 47,000,000 care tires and 26,000,00 truck tires are sold each year in the united states. what is stravinsky's market share in each of these two markets (cars and trucks)?