alleryIn algebra, what do letters such as x and y usually stand for?
AUnknown or varying numbers
BFixed units of length
CSigns for operations
DNames of solid shapes
Answer & Solution
Correct answer: A. Unknown or varying numbers
1. Algebra uses letters called variables in place of numbers.
2. A variable can be unknown or can change from case to case.
3. Units, operation signs and shape names are not what the letters stand for.
_Source: Wikipedia, Algebra, Elementary algebra_
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