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topjm [15]
2 years ago
9

A letter/symbol that takes place of an unknown number?

Mathematics
2 answers:
hammer [34]2 years ago
7 0
This is called a variable and some examples would be almost any letter depending on the question but the most common letters would be X and Y
densk [106]2 years ago
3 0

Answer: A variable

Step-by-step explanation:

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Since AB + BC = AC, x + 3x = 20 → 4x = 20 → x = 5.

AB = x = 5 and BC = 3x = 3 * 5 = 15.

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3 years ago
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Step-by-step explanation:

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T interval

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You randomly select 20 games and see that the average yards per game is 273.7 with a standard deviation of 31.64 yards.

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3 years ago
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