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quester [9]
3 years ago
8

The equation x + y2-4x+2y=b describes a circle.

Computers and Technology
1 answer:
liberstina [14]3 years ago
6 0

Answer:

-1

Explanation:

The given equation can be written as

-3x +y^2 +2y +1=b+1

-3x +(y+1)^2=b+1

(-3x-b)+ (y+1)^2=1

This is to be compared with (x-a)^2 + (y-b)^2=c^2

where (a,b) is the center, and c is the radius of the circle.

Thus, we get y=-1, and this is our answer.

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Assuming dataFile is an ofstream object associated with a disk file named payroll.dat, which of the following statements would w
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Answer:

dataFile << salary;

Explanation:

To write salary to a file (payroll.dat) using ofstream, you make use of the following instruction:

<em>ofstream dataFile; </em>

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2 years ago
Is there an answer to these picture?
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6 0
3 years ago
Por qué no es tan común el uso de energías mas amigables con el medio ambiente en el país donde vives?
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Answer:

Explanation:

English:

All forms of electricity generation have an environmental impact on our air, water, and land, but it varies. Of the total energy consumed in the United States, about 40% is used to generate electricity, making electricity use an important part of each person’s environmental footprint.

Producing and using electricity more efficiently reduces both the amount of fuel needed to generate electricity and the number of greenhouse gases and other air pollution emitted as a result. Electricity from renewable resources such as solar, geothermal, and wind generally does not contribute to climate change or local air pollution since no fuels are combusted.

The fuel mix for U.S. electricity generation

The chart below shows that most of the electricity in the United States is generated using fossil fuels such as coal and natural gas. A small but growing percentage is generated using renewable resources such as solar and wind.

Spanish:

Todas las formas de generación de electricidad tienen un impacto ambiental en nuestro aire, agua y tierra, pero varía. Del total de energía consumida en los Estados Unidos, alrededor del 40% se usa para generar electricidad, lo que hace que el uso de electricidad sea una parte importante de la huella ambiental de cada persona.

Producir y usar electricidad de manera más eficiente reduce tanto la cantidad de combustible necesario para generar electricidad como la cantidad de gases de efecto invernadero y otra contaminación del aire emitida como resultado. La electricidad de recursos renovables como la energía solar, geotérmica y eólica generalmente no contribuye al cambio climático ni a la contaminación del aire local, ya que no se queman combustibles.

Combustible para la generación de electricidad en EE. UU.

El cuadro a continuación muestra que la mayor parte de la electricidad en los Estados Unidos se genera utilizando combustibles fósiles como el carbón y el gas natural. Un porcentaje pequeño pero creciente se genera utilizando recursos renovables como la solar y la eólica.

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3 years ago
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<span>Stock market firms, also known as brokerage firms, assist in the act of buying and selling financial securities. These trades are financed through financial institutions for security.</span>
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