After a substance abuse counselor has acquired 20,00 hours of counseling experience and has remained in good standing with their board certification, they are considered professionally co. petent and are non longer required to seek ongoing education? ? true or false

That statement is false.
First reason is the knowledge of new type of substances will continue to appear so the substance abuse counselor will always be required to update his/her knowledge about the substance. Treatment for previosuly known substance also keep improving in inefficiency.
Second, the required hours to get the certification is 2,240 hours not 2,000.

2xy/9 is the answer to this problem

The answer is 9.7 cm