Find the precision for each measurement. 120 meters, 7 1/4 inches, 30.0 millimeters

how is 30.0 to the nearest 0.0001?

Maybe you meant nearest 0.0001m, not mm?

precision 120meters is to the nearest ten meters

7 1/4 is to the nearest 1/4 inch
30.0 mm is to the nearest .0001 (then thousandth) mm. This is the most precise of all three

To find the precision for each measurement, we need to determine the degree of accuracy or the significant figures involved in each measurement.

1. 120 meters:
To determine the precision, we need to look at the number of significant figures in this measurement. Here, we have 3 significant figures. The trailing zero after the decimal is not significant since there is no uncertainty mentioned for the measurement. Therefore, the precision for this measurement is three significant figures.

2. 7 1/4 inches:
For measurements expressed as mixed numbers or fractions, we need to consider the precision based on the fractional part. In this case, the precision lies in the fractional part, which is 1/4. Since 1/4 is a simple fraction, it has a defined precision on its own. Therefore, the precision for this measurement is 1/4 or quarter of an inch.

3. 30.0 millimeters:
Here, we have a measurement with three significant figures and a trailing zero after the decimal point. The trailing zero indicates that there is some level of certainty or precision in the measurement to the tenth of a millimeter. Therefore, the precision for this measurement is one-tenth of a millimeter.

In summary:
- 120 meters has a precision of three significant figures.
- 7 1/4 inches has a precision of 1/4 or a quarter of an inch.
- 30.0 millimeters has a precision of one-tenth of a millimeter.