Final answer:
After converting the fractional measurement of walnuts to a decimal (8.1 ounces) and subtracting the amount used in the recipe (7.4 ounces), it is determined that Jackson has 0.7 ounces of walnuts left.
Step-by-step explanation:
Jackson bought 81/10 ounces of walnuts which is equal to 8.1 ounces. He then used 7.4 ounces of them in a recipe. To find out how many ounces are left, we subtract 7.4 from 8.1:
- Convert 81/10 to a decimal: 81/10 = 8.1
- Subtract the ounces used in the recipe: 8.1 - 7.4 = 0.7
Therefore, Jackson is left with 0.7 ounces of walnuts.