Final answer:
The precise value of 6.4 is represented by option 1) 6.4. This is a straightforward question requiring the identification of the exact numerical value from a list of options provided.
Step-by-step explanation:
The value of 6.4 is exactly as stated, which is 6.4. When looking at the options provided:
- 6.4
- 6
- 7
- 5
We can see that the correct answer is the first option, as it matches the given value exactly. The other options represent rounded or different values, which are not equal to the precise value of 6.4. Therefore, the apt response to the question 'What is the value of 6.4?' would be option 1) 6.4.