X = 6 after distributing then adding 39 to both sides and then divide by 13
Answer: Positive (but not sure)
Step-by-step explanation: Are there answers to the questions is so i could help more but if correct hope i helped :)
Answer:The approximate square root is 2.23
Step-by-step explanation:√ 5 = 2.23
Thus: 2.23 x 2.23 = 5
No, since it a repeating(terminating) decimal, so it is not a rational number.
Answer:

Step-by-step explanation:
Given the formula;

We want to solve the given formula for r.
Multiply both sides by 


Take square root of both sides





