Answer: look at the picture i attached!
Do you mean 5+7?
If so, that equals 12!
The primary reason why scientific notation is important is that it allows us to convert very large or very small numbers into much more manageable sizes. When these numbers are in scientific notation, it is much easier to work with them
Answer:
KM=41.6
Step-by-step explanation:

Cross Multiply and Solve for KM.
