The answer is A they acted as a barrier to further settlement to the west. The Appalachians were the western outskirt of the states. They were an obstruction that kept them closer to the drift. The mountains stopped expansion of the colonies. To hard to go over to create new colonies
The answer and explanation is given in the picture below
I hope it helps.
The question is asking to calculate the magnitude of the acceleration due to gravity on the planet and base on the given of the problem and in my further calculation, the magnitude would be 3.638 m/s^2. I hope you are satisfied with my answer and feel free to ask for more
They both are 180 degrees.
One possible difference is that a straight angle is just a single angle measuring 180 degrees, while a linear pair supplementary angle are pairs of adjacent angles that add up to 180 degrees.