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Serggg [28]
3 years ago
12

Hello, please help me with this question, thank you very much.

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
7 0

Answer:

(A) <BAC = <ABC

(B) <C = 68°

( 2 * <A + <C = 180°)

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Pedro le dice a María si cambias los billetes de 10 € que tienes por billetes de 5 € y los billetes de 5 € por billetes de 10 €
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Answer: Maria has 10 bills of 5€ and 10 bills of 10€.

She has a total of 150€.

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Let be "f" the number of 5€ bills that Maria has and "t" the number of 10€ bills that Maria has.

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Use the Substitution method to solve the system of equations:

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2. Substitute the equation obtained into the second equation and solve for "t".

Then:

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f=20-10\\\\f=10

Therefore, Maria has 10 bills of 5€ and 10 bills of 10 €.

So the total amount of money she has, is:

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