The answer is the last one; to express very large or small numbers.
We use it so we can show big or very small numbers in an easier way.
Answer:
x = 2
Step-by-step explanation:
The least common denominator for the question you have supplied me with is 10. The least common multiple of the denominators, 5 and 10, is 10, making the LCD 10.
The answer is 0.00347222222