An 80 metre cable is suspended between 2 poles forming a parabola shape (the end-points of the cable are attached to the top of the poles). The vertex of the parabola is 20 metres above ground and both the poles are 50 metres tall. How far apart are the 2 poles?

Since gaining independence from spain and portugal, many latin american nations have faced similar struggles. choose a common issue discussed in this lesson, such as the influence of military dictatorships, struggles with democracy, or continuing revolutions and coups. in a short paragraph, discuss how that struggle has affected two latin american nations.

Which presentation option is also known as a screen of a presentation?

What are the major trends and specialties in psychology?