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Igoryamba
3 years ago
4

1. COMPLETE THE SENTENCE To solve the equation 2x + 3x = 20, first combine 2x and 3x because

Mathematics
2 answers:
tia_tia [17]3 years ago
8 0

Answer:

like terms

Step-by-step explanation:

2x and 3x are like because they have the same variable: x.

qwelly [4]3 years ago
4 0

Answer:

like terms

Step-by-step explanation:

the variable in 2 and 3 is the same

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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
4. If a Scooter goes 8 M/s, how fast does it go in KM/h?
Firlakuza [10]

Answer:

28.8 km/h

Step-by-step explanation:

I used the calculator, but I don't know any formulas for changing m/s km/h.

But I hope this helps!

7 0
3 years ago
Read 2 more answers
vera is measuring the size of a small hexagonal silver box that she owns. she places a standard 12 inch ruler alongside the box.
Rzqust [24]

I believe there is a corresponding figure to help answer this problem. See attached photo.

From the figure, we can see that there are 8 tick marks in an inch. The number of tick marks covering one side is about 5.5 tick marks. Therefore:

length = 5.5 tick marks * (1 inch / 8 tick marks)

length = 0.69 inches

4 0
4 years ago
Is this right if not please help me
Stels [109]

Answer:

No

Step-by-step explanation:

3rd option should be changed to "will not".

5 0
3 years ago
Read 2 more answers
In reflections, the figure is
Bess [88]

Answer:

Cute

Step-by-step explanation:

4 0
3 years ago
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