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ryzh [129]
4 years ago
14

Patricia compró 10 estampillas de correos unas de $3.00 y otras de $1.00. Si pago con $18.00 en total. ¿Cuántas pago por cada un

a? (Hacer el problema con uno de los varios sistemas de ecuaciones)
Mathematics
1 answer:
Ganezh [65]4 years ago
6 0

Answer:

Entonces Patricia necesitara 4 estampas de $3 dolares y 6 estampas de $1 dolar

Step-by-step explanation:

Cuatro estampas de tres dolares cada una es:

3 × 4 = 12

Ahora necesitamos encontrar  cuantas estampas mas Patricia puede comprar. Podemos hacer esto restando 12 a 18, que es el costo total de las estampas menos del valor encontrado

18 - 12 = 6

Ahora sabemos que Patricia necesita 6 dolares de estampas ($1 estampas) para acompletar las 10 estampas  dando un total de $18 dolares.

6 × 1 = 6 < sumar 6 de 12

12 + 6 = 18

Entonces Patricia necesitara 4 estampas de $3 dolares y 6 estampas de $1 dolar

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<h2>Answer:</h2>

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We know that the general equation of a quadratic equation in terms of a variable x is given by:

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A)

y(y + 4) - y = 6

On simplifying the terms we have:

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Hence, option: A is correct.

B)

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(3x + 2) + (6x - 1) = 0\\\\i.e.\\\\3x+2+6x-1=0\\\\i.e.\\\\3x+6x+2-1=0\\\\i.e.\\\\9x+1=0

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C)

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Hence, option: C is correct.

D)

3a - 7 = 2(7a - 3)

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Hence, option: D is incorrect.

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3 years ago
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