College

Use the appropriate rounding rules to perform the following calculation. Express the result with the correct precision or number of significant digits.

Add 0.9 pound to 137 pounds to find your weight before you went for a run.

Your weight before you went for a run is _______ pounds.

(Type an integer or a decimal)

Answer :

Sure, let's solve this step by step:

1. Identify the numbers to be added:
- We have 0.9 pound
- We also have 137 pounds

2. Perform the addition:
- [tex]\( 137 + 0.9 = 137.9 \)[/tex]

3. Determine the number of significant digits:
- The number 137 has 3 significant digits.
- The number 0.9 has 1 significant digit after the decimal point.

4. Expressing the result with the correct precision:
- When adding numbers, the result should be rounded to the least number of decimal places of the addends. In this case, 0.9 has 1 decimal place, so our result should also be rounded to 1 decimal place.

Thus, the result is:
137.9 pounds

Your weight before you went for a run is 137.9 pounds.