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bearhunter [10]
3 years ago
11

Please give me answer please ​

Mathematics
1 answer:
777dan777 [17]3 years ago
7 0

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Por una calculadora y un cuaderno habríamos pagado, hace tres días, 10,80 €. El precio de la calcula-dora ha aumentado un 8%, y
Inessa05 [86]

Answer:

La calculadora y el cuaderno costaba 9 y 1,8 euros hace tres días.

Step-by-step explanation:

A partir del enunciado podemos construir el sistema de ecuaciones lineales:

Hace tres días:

x+y = 10.80 (1)

Actualmente:

1.08\cdot x + 0.9\cdot y = 11.34 (2)

Donde:

x - Precio de la calculadora.

y - Precio del cuaderno.

Por métodos algebraicos, tenemos que el sistema de ecuaciones tiene la siguiente solución:

x = 9, y = 1.8

La calculadora y el cuaderno costaba 9 y 1,8 euros hace tres días.

4 0
3 years ago
Un fabricante de ventanas cuadradas cobra a razón de 3 euros por cada metro de marco y 12 euros por el cristal, sean cuales sean
lesya [120]

Answer:

Givens

  • The cost of the square windows is 3 euros per meter, and 12 euros for the crystal.

<h3>If a window has 2 meters side, how much would it cost? (A)</h3>

Notice that the window is a square, that means all four sides are congruent, so it has 8 meters in total, which would cost 24 euros plus the crystal. Therefore, the total cost of a window with 2 meters side is 24+12 = 36 euros.

Specifically, the function of the cost is: C(x)=3x+12, where x represents meters of sides. (C)

<h3>If we paid 60 euros, the dimensions are (B)</h3>

60=3x+12\\60-12=3x\\x=\frac{48}{3}=16

The window has 16 meters between the four sides, which gives 5 meters per side.

The graph of the function is attached.

6 0
3 years ago
Which of the following coordinates represent a point on the y-axis.Choose all that apply. (pick two)
Sergeeva-Olga [200]
The think it will be a and b.
3 0
4 years ago
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SIZIF [17.4K]
5 is the correct answer.
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What is the equation of the line that is perpendicular to the given line and passes through the point (2, 6)?
laiz [17]

Answer:

x=2

Step-by-step explanation:

7 0
3 years ago
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