Final answer:
After performing the operations, the simplified result is -9.999, which does not match any of the options provided in the question. It suggests there may be an error in the question or the provided options.Therefore, the correct option is: d) 16
Step-by-step explanation:
The question is asking to simplify the expression: 10^(-3) - (2.8 + 1.2) * 1 - 6.
Firstly, calculate the term inside the parentheses: 2.8 + 1.2 which equals 4.
Then, simplify the expression by performing the subtraction and multiplication:
10^(-3) is 0.001 (moving the decimal three places to the left),
so 0.001 - 4 * 1 - 6 simplifies to 0.001 - 4 - 6.
Finally, subtract these numbers to obtain the final answer, which is:
0.001 - 4 = -3.999
-3.999 - 6 = -9.999
However, none of the options given in the question match this result. It's important to check the operations and the given options carefully for any mistakes.Therefore, the correct option is: d) 16