Final answer:
The number 623.9 has a '6' that is one-tenth the value of the '6' in 6,239, because the '6' represents 600, which is one-tenth of 6,000 (the value of the '6' in 6,239).
Step-by-step explanation:
The question asks to identify a number that has a 6 with a value that is one-tenth of the value of the 6 in 6,239. In the number 6,239, the digit 6 is in the thousands place, which means it has a value of 6,000. To find a number in which the value of the digit 6 is one-tenth of 6,000, we want the 6 to have a value of 600. Therefore, the digit 6 must be in the hundreds place.
An example of such a number is 623.9. Here, the 6 is in the hundreds place, representing a value of 600, which is one-tenth the value of the 6 in 6,239.