Examlex
Find the component form of v if and the angle it makes with the x-axis is 150°.
Coins
Pieces of metal issued by the government as money, typically used as lower-value currency.
Barter
An exchange system where goods or services are directly exchanged for other goods or services without using a medium of exchange, such as money.
Commodity Money
A type of money whose value comes from a commodity of which it is made, such as gold or silver.
Goldsmiths
Historical tradespeople who crafted objects out of gold and were also involved in banking activities, such as issuing loans and safekeeping valuables.
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