02knrad 02knrad

29-01-2020
Mathematics

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which of the following math statements contain variable(s)? Check all that apply. A. 13-x=9 B. ?+7=12 C. 1+6=7 D. 15-5=___

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texaschic101 texaschic101

29-01-2020

Answer:

Step-by-step explanation:

A variable is a number that is not known yet. It is usually represented by a letter.

A. 13 - x = 9......the variable here is x

B. ? + 7 = 12.....not 100% sure on this one, but the question mark is in place of an unknown number...so I guess this can be used for a variable.

C and D do not contain any variables

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