The system ⎧⎩⎨a2+b2−c2=05a−b=ca+b+c=30 has exactly one solution. find the solution by using substitution. enter your answer as an ordered triple in the format (a, b, c), like this: (42, 53, 64)

(5,12,13)

Step-by-step explanation:

You are given the system of three equations

The second equation states that

Substitute it into the first and third equations:

From the last equation

Substitute it into the first equation

Then

The solution is (5,12,13)

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )