Final answer:
The value of the digit 7 in the number 764 is 700, as it is in the hundreds place.
Step-by-step explanation:
The student seems to be asking about the positional value of the digit 7 in the number 764. In the decimal number system, each digit has a value based on its position, or place, in the number. The digit 7 in the given number is in the hundreds place, which means it represents seven hundreds, or 700.