Final answer:
The number 693,462 represents exactly 693,462; rules for determining significant figures indicate that trailing zeros are significant only with a decimal point. Significant figures in given numbers can range from one (in 0.0009) to six (in 15,450.0).
Step-by-step explanation:
To determine if the number 693,462 represents 693,462 or not, we would typically need some context; however, based on the information given, it seems we are asked to complete a chart evaluating whether the number 693,462 represents the exact quantity of 693,462 without any estimation or rounding. The answer would be A) Yes if it represents the exact figure or B) No if it does not.
When looking at significant figures, we need to establish rules to determine which digits are significant. For instance, trailing zeros in a number are significant only if the number contains a decimal point, as in 15,450.0. Leading zeros, as in 0.0009, are not significant. In the case of the population of the United States being reported as 306,000,000, this number has three significant figures; the 3, the 6, and the zero between them denote 306, with the following zeros simply indicating the magnitude of the number (in millions).
When checking for significant figures, consider the following examples:
- 0.0009 has one significant figure (the 9).
- 15,450.0 has six significant figures (all the digits are significant due to the decimal point).
- 6x10³ has one significant figure (the 6; powers of 10 are not counted in significant figures).
- 87.990 has five significant figures (all the numbers including the trailing zeros because of the decimal point).
- 30.42 has four significant figures (the 3, 0, 4, and 2).