What is the significance of the U. S. Supreme Court establishing the Cherokee and other tribes as sovereign nations within the United States?

The Supreme Court refused to rule on whether the Georgia state laws were applicable to the Cherokee people. Instead, the Court ruled that it did not have jurisdiction over the case because the Cherokee Nation, was a “domestic dependent nation” instead of a “foreign state."

answer: idk

explanation:

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69