Question

subtract the following numbers, and give your answer with the correct number of significant figures. 1387.11 - 928.321 - 58 = ____ a 400.7892 b 400.78 c 401 d 400.7 e 400.789

Explanation:

Step1: First subtraction

$1387.11 - 928.321=458.789$

Step2: Second subtraction

$458.789 - 58 = 400.789$

Step3: Significant - figures consideration

The number 58 has two significant figures. When subtracting, we round the final result to the same precision as the least - precise number involved in the calculation. So, $400.789$ rounds to 401 with three significant figures.

Answer:

C. 401