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dexar [7]
3 years ago
9

¿Qué pasa cuando nos enfrentamos con dos incógnitas, en el caso de que las ecuaciones que se generen sean de primer grado y form

en un sistema de ecuaciones?
Mathematics
1 answer:
kolbaska11 [484]3 years ago
7 0
<h2>Explicación:</h2><h2 />

Una ecuación de primer grado es una ecuación lineal en la que se ven involucradas una o más variables, sin existir productos entre ellas. Por ejemplo, una ecuación de primer grado con dos incógnitas es:

y=mx+b \\ \\m:pendiente \\ \\ b:y-intercept

De manera que un sistema de ecuaciones con dos incógnitas podría ser:

y=m_{1}x+b_{1} \\ \\ y=m_{2}x+b_{2}

que representan ecuaciones de rectas.

Existen tres posibilidades:

1. Una solución:

Ocurre cuando las rectas no son paralelas, es decir:

m_{1}\neq m_{2}

Entonces la solución es la intersección de estas dos rectas.

2. Infinitas soluciones:

Ocurre cuando las ecuaciones son las mismas, en cuyo caso las rectas son las mismas y se intersectan en todos los puntos, es decir:

m_{1}=m_{2} \\ \\ b_{1}=b_{2}

3. Ninguna solución:

Ocurre cuando las rectas son paralelas pero tienen distinta intersección con el eje y, es decir:

m_{1}=m_{2} \\ \\ b_{1}\neq b_{2}

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Answer:

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(1) We have to collect data about vehicle sales in last 20 years.

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(3) After selecting sample of vehicles we have to communicate to corresponding vehicle owners to gather information about that particular vehicle.

(4) We have to note number of vehicles which are still on the road.

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We have to test for null hypothesis H_0:p=0.80

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z=\frac{\hat p - p_0}{\sqrt{p_0(1-p_0)/n} }

here,

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z=\frac{r/n-0.80\sqrt{n} }{0.40} \\\\=2.5(\frac{r}{n} -0.8)\sqrt{n}

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The area of the top face of a cube is 16 square inches. Use 8 of these cubes to make a rectangular
KengaRu [80]

Answer:

The volume of the rectangular prism is 512 inches³

Step-by-step explanation:

Any cube has 6 square faces

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∴ The volume of the prism = 8 × 64

∴ The volume of the prism = 512 inches³

The volume of the rectangular prism is 512 inches³

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