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olga55 [171]
4 years ago
7

Answer it answer it answer it

Mathematics
2 answers:
AysviL [449]4 years ago
6 0

Answer: D.

Step-by-step explanation: If you look closely, putting a 100 wouldn't make sense

Stella [2.4K]4 years ago
6 0
The answer is D .......
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The discount price of a pair of shoes is $22. what is the original price
Goshia [24]
The original price is $88.
how I got the answer:
$22 • 100= 2,200
2,000/25= $88

regular shoes cost w/75% off is $66.00
how I got my answer:
$88 • 75% = 6,600
6,600/100 = $66.00
7 0
3 years ago
Read 2 more answers
3x + 2y = -9<br> 4x - 2y = -26<br> please help I have to solve this with the elimination method
Paladinen [302]

Answer:

x = - 5, y = 3

Step-by-step explanation:

Given the 2 equations

3x + 2y = - 9 → (1)

4x - 2y = - 26 → (2)

Adding (1) and (2) term by term eliminates the y- term, that is

7x = - 35 ( divide both sides by 7 )

x = - 5

Substitute x = - 5 into either of the 2 equations and solve for y

Substituting into (1)

3(- 5) + 2y = - 9

- 15 + 2y = - 9 ( add 15 to both sides )

2y = 6 ( divide both sides by 2 )

y = 3

8 0
3 years ago
Determine the equations of the vertical and horizontal asymptotes, if any, for f(x)=2x/x+4
slamgirl [31]

Answer:

Vertical asymptote:x=-4

Horizontal asymptote: y=2

Step-by-step explanation:

The given rational function is

f(x)=\frac{2x}{x+4}

To find the vertical asymptote we equate the denominator to zero and solve for x.

x+4=0

The equation of the vertical asymptote is

x=-4

To find the horizontal asymptote we take limit to infinity. Or simply express the coefficient of x in the numerator over the coefficient of x in the denominator since this is a proper rational function.

The horizontal asymptote has equation

y=\frac{2}{1} =2

7 0
4 years ago
Pedro is getting balloons for his grandmother's birthday party. He wants each balloon string to be 12 feet long. At the party st
Elza [17]

Answer:

Total length of string required in yards 8112 yards

Step-by-step explanation:

The length of the string attached with each balloon is equal to 12 feet

In the party total number of balloon used is equal to 52 balloons

The total length of the string required

Length of string used in one balloon * total number of balloons

= 12 * 52 = 624 feet

1 feet is equal to 13 yards

Total length of string required in yards 13 * 624 = 8112 yards

7 0
3 years ago
Ecuación de la hipérbola con centro en (0;0), focos en abrir paréntesis 0 coma espacio menos raíz cuadrada de 28 cerrar paréntes
yaroslaw [1]

Answer:

\frac{y^{2}}{25}-\frac{x^{2}}{3}=1

Step-by-step explanation:

Para resolver este problema debemos tomar en cuenta los datos que nos dan y la ecuación de una hipérbola. Comencemos con los datos:

centro: (0,0)

focos: (0,-\sqrt{28}),(0,\sqrt{28})

eje conjugado = 2\sqrt{3}

por los focos podemos ver que la hipérbola se dirige hacia el eje y, por lo que debemos tomar la siguiente forma de la ecuación de la parábola:

\frac{y^{2}}{a^{2}}+\frac{x^{2}}{b^{2}}=1

de los focos podemos obtener que:

c=\sqrt{28}

y del eje conjugado podemos saber que al dividir la longitud del eje conjugado dentro de 2 obtenemos b, así que:

b=\sqrt{3}

podemos utilizar la siguiente fórmula para obtener a:

c^{2}-a^{2}=b^{2}

si despejamos a en la ecuación obtenemos lo siguiente:

a=\sqrt{c^{2}-b^{2}}

ahora podemos sustituir los valores:

a=\sqrt{(\sqrt{28})^{2}-(\sqrt{3})^{2}}

a=\sqrt{28-3}

a=\sqrt{25}

a=5

así que media vez conozcamos a, podemos sustituir los datos en la ecuación de la hipérbola así que obtenemos lo siguiente:

\frac{y^{2}}{a^{2}}+\frac{x^{2}}{b^{2}}=1

\frac{y^{2}}{(5)^{2}}+\frac{x^{2}}{(\sqrt{3})^{2}}=1

\frac{y^{2}}{25}+\frac{x^{2}}{3}=1

si graficamos la hipérbola, queda como en el documento adjunto.

7 0
3 years ago
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