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Kay [80]
3 years ago
15

HJ=53 IK=56 JK=15 find the length of HI and IJ

Mathematics
1 answer:
Nana76 [90]3 years ago
7 0

HI = (HJ + JK) - IK

HI = (53 + 15) - 56 = 69 - 56 = 13

IJ = HJ - HI = 53 - 13 = 40

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Resolviendo el sistema de ecuaciones veremos que:

  • niña = 23kg
  • niño = 28kg
  • perro = 18kg.

<h3>¿Como resolver el sistema de ecuaciones?</h3>

Aqui tenemos el sistema de ecuaciones:

Niña + niño = 51kg

Niño + perro = 46 kg

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Para resolver esto, lo primero que debemos hacer es aislar una variable en una de las ecuaciones, por ejemplo, podriamos aislar "perro" en la tercera:

perro = 41kg - niña

Ahora reemplazamos eso en la segunda para obtener:

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Ahora logramos obtener la variable "niño" en terminos de la variable "niña". Podemos reemplazar esto en la primera ecuacion del sistema.

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Ahora que sabemos esto, usamos las otras ecuaciones para encontrar el peso del niño y el perro:

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Sí quieres aprender más sobre sistemas de ecuaciones, puedes leer:

brainly.com/question/17174746

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2 years ago
I don't really understand this, please help. Also, if you could show how you got your answer, that would help.
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