An amplifier with the volume control marked in decibels.
A kilometer is a unit of measurement for distance and not a household item.
what household item is the shaped like a pyramid
Yes Plus Fabric Softener is a household item. Yodora Deodorant is a household item. Yellow peppers are a household item.
Household items that may have positive and negative numbers include thermometers, which display temperatures in both Celsius and Fahrenheit, with freezing points as negative values. Some digital scales also show negative numbers when weighing items below zero or in specific units. Additionally, certain electrical appliances might indicate voltage levels, where negative values can represent a loss or drop in power. Lastly, some measuring tapes may have markings that indicate negative measurements for specific applications.
Table salt (sodium chloride) is a household item that is made from chlorine and sodium.
A bag of flour or sugar is a common household item that is around 5 pounds in weight.
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...appliance?
Yes
A candle
Queen bed is a household item.
A toy xylophone is a household item.