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2 years ago

10

What is the solution to the system? 0.5x + 0.6y = 1.7 −x − 0.9y = −4.3

1 answer:

vaieri [72.5K]2 years ago

4 0

Number 1 is x=2.2 and number 2 is x=4.3

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Rewrite the following equation in standard form.<br> y = -x-1

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Answer:

x+y=-1

Step-by-step explanation:

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2 years ago

Michael sold his painting for $50. He sold his painting for $10 less than its original price. At what price did Michael buy the

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2 years ago

7) Una epidemia mató los 3/7 de las vacas de un granero y de las que le quedaron vendió 1/2. Si todavía le quedaron 24 vacas, ¿C

4vir4ik [10]

Answer:

Habían inicialmente 84 vacas. Murieron 36 vacas. 24 vacas fueron vendidas.

Step-by-step explanation:

Sea $x$ la cantidad inicial de vacas. De acuerdo con el enunciado, murieron tres séptimos de la cantidad inicial y la mitad de ese remanente fue vendida, quedando 24 vacas. Matemáticamente, tenemos las siguientes operaciones:

Cantidad inicial de vacas

$x = \frac{24}{\left(1-\frac{3}{7} \right)\cdot \left(1-\frac{1}{2} \right)}$

$x = 84$

Habían inicialmente 84 vacas.

Cantidad de vacas muertas

$y = \frac{3}{7}\cdot x$

$y = 36$

Murieron 36 vacas.

Cantidad de vacas vendidas

$z = \left(1-\frac{3}{7} \right)\cdot \frac{1}{2}\cdot x$

$z = 24$

24 vacas fueron vendidas.

8 0

2 years ago