A bridge across a river is supported by a semielliptical arch with diameter (length of the major axis) of 1250 feet. The surface of the river lies on the major axis, and the center of the arch rises 175 feet above the river's surface. A horizontal roadway is 3 feet above the center of the arch. Find the vertical distance from the roadway to a point on the arch that is 600 feet (horizontally) from the center.

the central idea is that:

individuals should refuse to cooperate with institutions they believe unjust.

thoreau felt  that governments were more often agents of corruption than justice, even democracies, and that just because the majority feels a certain way does not make it just or correct in absolute terms. he uses the fact that slavery exists in our democracy to support this idea.

he goes on to say that, as a result, people should live true to their own internal laws regarding right and wrong, as a product of reflection and a moral life, rather than following every law that society imposes. 

step-by-step explanation:

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative