The answer to this question is 23. How you get this is by adding all the sides like this: 2n+6+135+151+140+63=540. Then you just solve the equation.
Answer:
-10/-5= 2 simply divide
2 negatives multiplied and/ or divided by is a positive number
Answer:
If x^2 = 1, then x = 1 is NOT true because x can also be -1.
Answer:

Step-by-step explanation:

