The distance a free falling object had traveled can be modeled by the equation d=1/2 at^2 where a is acceleration due to gravity and t is the amount of time the object has fallen. what is t in terms of a and d?

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is

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