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andrew11 [14]
4 years ago
15

2x2-3x-5=0 using quadratic formula

Mathematics
1 answer:
saveliy_v [14]4 years ago
4 0
This formula solve by discriminant (D=b^2-4ac)

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Step-by-step explanation:

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Al oeste de Albuquerque, Nuevo México, la carretera 40 con rumbo al este es recta y tiene una fuerte pendiente hacia la ciudad.
alexgriva [62]

Usando el concepto de pendiente, se encuentra que el cambio en la distancia horizontal es de 10 pies.

La pendiente de una reta es la <u>razón entre el cambio vertical y el cambio horizontal,</u> o sea, cual el cambio vertical cuando el cambio horizontal es de 1.

En este problema, hay que:

  • La pendiente es -100, o sea, cuando hay un desplazamiento de un pie por adelante, hay una queda de 100 pies.
  • Bajado 1000 pies, entonces, aplicando la proporción:

1 pie H -> -100 pies V

x pie H -> -1000 pies V

Aplicando la multiplicación cruzada:

-100x = -1000

100x = 1000

x = \frac{1000}{100}

x = 10

El cambio en la distancia horizontal es de 10 pies.

Un problema similar es dado en brainly.com/question/24766917

3 0
3 years ago
Write an equation that represents a discount of 18% on a retail price of $55. Let p represent the new price.
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\boxed{\tt{55(55-0.18)=pA}}

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