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Lisa [10]
3 years ago
8

A letter that represents an unknown number is

Mathematics
2 answers:
Ganezh [65]3 years ago
8 0
Hey there! Hello!

I believe what this question (more of a statement) is asking is to identify what a letter that represents an unknown number is called. Most of the time, i refer to it as just a variable, or an unknown variable. It can also be referred to as just an unknown value. 

Feel free to ask me any additional questions if you have any! :-)
aleksandr82 [10.1K]3 years ago
7 0
The variable that's what it is called.. it could be represented with any letter but x most of the time
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Firdavs [7]

Answer:

r = -6

Step-by-step explanation:

6r + 7 = 13 + 7r

-6r both sides

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a rectangular sheet is 62cm long and 42cm wide from each of its corners a square of side 6cm is cut out and an open box is made
Alla [95]

Answer:

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Step-by-step explanation:

Given as :

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And The width of the box = B' = (B - 6 - 6)

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4 0
2 years ago
3.5x - 11 = 20.5 what does x equal?
stepan [7]

Answer:

x=9

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Divide each side by 3.5x

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