What were 6 common restrictions laid out by the black codes In the south?

please help :(

The answer is below

Explanation:

The 6 common restrictions laid out by the black codes in the south after the United States civil war are:

1. Restricting the rights to testify against whites

2. Restriction to serve on juries or in state militias,

3. Restriction to vote

4. Restriction to read and write.

5. Restriction to bear arms,

6. Restriction to gather in groups for worship

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