Question

1 matching 1 point match the following quantities to a situation where it might be useful. a. 20 gallons per hour b. 30 feet per minute c. 0.1 kilograms per second

Explanation:

Since the problem is about matching rates (like 20 gallons per hour, 30 feet per minute, 0.1 kilograms per second) to useful situations, and rate - related problems often involve unit analysis and practical application of measurement units, which falls under Mathematics (specifically in the area of unit conversion and rate - related applications, which can be part of basic arithmetic or applied math in the subfield of "Others" or more generally in the context of real - world math problems). However, to solve this, we need to consider typical scenarios for each rate:

• For "20 gallons per hour", a situation like the rate at which a pool is being filled or a tank is being emptied (e.g., a pool filler that fills 20 gallons of water every hour).
• For "30 feet per minute", a situation like the speed of an elevator moving, or a person walking at a certain pace (e.g., an elevator that ascends 30 feet every minute).
• For "0.1 kilograms per second", a situation like the rate at which a machine is dispensing a substance (e.g., a machine that dispenses 0.1 kilograms of a chemical every second).

But since the dropdowns are not shown, we can't complete the matching fully. But the discipline here is Mathematics (subfield: Others or Applied Math) and the format would be Step - by - Step if we were to do the matching with given options.

Answer:

(Need more details about the dropdown options to complete the matching. If we assume typical options:
a. 20 gallons per hour - could match with "Filling a large tank with water"
b. 30 feet per minute - could match with "Speed of an elevator"
c. 0.1 kilograms per second - could match with "Rate of a machine dispensing a powder"
But without the actual dropdown options, the answer can't be fully determined. )