Final answer:
The number in which the value of the 3 is one-tenth the value of the 3 in 712.83 is D. 80.345.
Step-by-step explanation:
To find the number in which the value of the 3 is one-tenth the value of the 3 in 712.83, we can start by finding the value of the 3 in 712.83. The 3 in 712.83 has a value of 300. Now, we need to find a number in which the value of the 3 is one-tenth of 300. This means we are looking for a number in which the value of the 3 is 30.
We can check the options given:
A. 28.13 - The value of the 3 is not 30.
B. 157.038 - The value of the 3 is not 30.
C. 63.81 - The value of the 3 is not 30.
D. 80.345 - The value of the 3 is 30. Therefore, the answer is D. 80.345.