Final answer:
To order the numbers, compare each decimal place from left to right. The sequence from greatest to least is 784.155, 784.15, and 784.14.
Step-by-step explanation:
To order the numbers from greatest to least, we compare each decimal place starting from the left until we find a difference. The number with the higher digit in that decimal place will be greater.
- 784.155 (Highest because the third digit after the decimal is 5, which is greater than 1 or 0.)
- 784.15 (Second because it is equal to the first number until the third digit, where it has a 0 which is less than the 5 in the first number.)
- 784.14 (Least because the second digit after the decimal is 4, which is less than the 5 in the second number.)
Therefore, the order from greatest to least is 784.155, 784.15, and 784.14.