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S_A_V [24]
3 years ago
8

What does a variable allow you to do that you couldn't do before

Mathematics
1 answer:
kozerog [31]3 years ago
8 0
For example x^2=25
Without x the expression wouldn't exist, it allows you to calculate unknowns for example in a physics experiment using v=u+at
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Sonbull [250]

9514 1404 393

Answer:

  B  (2 violet)

Step-by-step explanation:

Let the colors be represented by their first letter. Then the balances give rise to two equation:

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7 0
3 years ago
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