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alukav5142 [94]
4 years ago
7

(-2,-4) ;m =3 in point slope form please

Mathematics
1 answer:
zalisa [80]4 years ago
8 0

\huge\boxed{y+4=3(x+2)}

Point-slope form is y-y_1=m(x-x_1), where m is the slope and (x_1,y_1) is a point on the line.

Substitute in the values. y-(-4)=3(x-(-2))

Simplify the negative subtraction to addition. \boxed{y+4=3(x+2)}

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Un globo vuela entre dos ciudades A y B, que distan entre sí 1.500 m. Los tripulantes del globo ven la ciudad A con un ángulo de
enot [183]

Answer:

La altura del globo con respecto al suelo es 449,6 metros.

Step-by-step explanation:

La afirmación está incompleta. El enunciado completo es: "Un globo vuela entre dos ciudades A y B, que distan entre sí 1.500 m. Los tripulantes del globo ven la ciudad A con un ángulo de depresión de 27°, mientras que para ver la ciudad B es de 36°. ¿Cuál es la altura aproximada del globo con respecto al suelo?

El diagrama geométrico de la situación se encuentra descrita en el archivo adjunto. La altura aproximada del globo puede obtenerse con ayuda de las funciones trigonométricas, en este caso, se recomienda utilizar la función tangente de los ángulos de depresión:

Ciudad A

\tan 27^{\circ} = \frac{h}{1500\,m-x}

0,510 = \frac{h}{1500\,m-x}

Ciudad B

\tan 36^{\circ} = \frac{h}{x}

0,727 = \frac{h}{x}

Donde h y x son la altura con respecto al suelo y la distancia horizontal con respecto a la ciudad A.

A continuación, se elimina la altura de ambas ecuaciones por igualación y se determina la distancia horizontal del globo con respecto a la ciudad A:

0,727\cdot x = 0,510\cdot (1500\,m-x)

1,237\cdot x = 765\,m

x = 618,432\,m

Finalmente, la altura del globo con respecto al suelo es:

h = 0,727\cdot x

h = 0,727\cdot (618,432\,m)

h = 449,600\,m

La altura del globo con respecto al suelo es 449,6 metros.

6 0
4 years ago
What are the first four terms of the sequence represented by the expression n(n – 1) – 4? A. –2, 2, 6, 10 B. –3, 0, 3, 6 C. –4,
vesna_86 [32]

Answer:

C

Step-by-step explanation:

to find the first 4 terms, substitute n = 1, 2, 3, 4 into the expression

n = 1  → 1(1 - 1) - 4 = 0 - 4 = - 4

n = 2 → 2(2 - 1) - 4 = 2 - 4 = - 2

n = 3 → 3(3 - 1) - 4 = 6 - 4 = 2

n = 4 → 4(4 - 1) - 4 = 12 - 4 = 8

the first four terms are - 4, - 2, 2, 8 → C



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3 years ago
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Gennadij [26K]

Answer: reminder u are loved. <3

Step-by-step explanation:

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3 years ago
What is the absolute value of 8.5?
castortr0y [4]
8.5 correct me if i am wrong.
7 0
3 years ago
Please help it would be much appreciated.
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explanation: those two angles are supplementary which add up to be 180.
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