Which formula gives the area of a triangle? a=1/2(b+h)

In a school 2/3 of the students study a language of those who study a language 2/5 study french

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

Answer this two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: two right triangles abc and edc have a common vertex c. angle abc and edc are right angles. ab is labeled 13 feet, ac is labeled 15 feet, ec is labeled 10 feet, and ed is labeled 4 feet.what is the approximate distance, in feet, between the two poles? 11.14 feet16.65 feet14.35 feet15.59 feet