3 years ago

Does anyone know why x is normally used for an unknown number?

Mathematics

1 answer:

jeka943 years ago

7 0

Then you are able to substitute in X and it can have a infinite number of values catered to the question.

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270 american dollar and recevied 3000 pesos when he returned from mexico he had 100 pesos left. how many will he recevie when he

AURORKA [14]

To solve this problem we can use simple proportion
If
270$ -------------------------3000 pesos
x $ ---------------------------100 pesos (x$ means that we dont know how much)
Now we crossmultiplying to get proportion
x*3000=270*100
Now we just to solve eq
3000x=27000 /:3000
x=27000:3000
x=9$ - its the result

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2 years ago

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jasenka [17]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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k0ka [10]

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