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larisa
1 month ago
9

If LK=MK, LK=7x-10,KN=x+3, MN=9x-11 and KJ=28 find LJ

Mathematics
1 answer:
zzz [12.3K]1 month ago
3 0
Consider points J, K, L, M, and N located on a single straight line.

Calculate MK by subtracting KN from MN: MK = MN + (-KN) = MN - KN = 9x - 11 - (x + 3) = 8x - 14

Given that LK equals MK and LK is also 7x - 10, we set:

7x - 10 = 8x - 14

Subtracting 7x from both sides gives:

0 - 10 = x - 14

Adding 10 to both sides results in:

0 = x - 4

Hence, x equals 4.

Next, compute LJ as the sum of MK and KJ.

Since MK = LK = 7x - 10, plugging in x = 4 yields MK = 7(4) - 10 = 28 - 10 = 18

Therefore, LJ equals 18 plus 28, totaling 46.
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I believe there are 1,600 students enrolled in metaphysics.
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15 days ago
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charlotte owns two entertainment websites. Here are some details about those websites for one entire month: Website A Website B
Zina [12379]

Response:

read below

Detailed explanation:

1) Charlotte considered two different methods to define this quantity. Identify these two definitions among the options provided.

Choose 2 answers:

Choose 2 answers:

(Choice A, Incorrect)

WRONG

Profit divided by total number of likes

(Choice B, Checked, Correct)

CORRECT (SELECTED)

Profit divided by number of writers

(Choice C, Checked, Correct)

CORRECT (SELECTED)

Profit divided by expenses

(Choice D, Incorrect)

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Expenses divided by number of writers

2) Determine which site generates the most profit per investment of resources considering both definitions. Did you achieve the same conclusion for each?

Choose 1 answer:

Choose 1 answer:

(Choice A, Incorrect)

INCORRECT

Yes. Both definitions indicate website A yields more profit per resource spent.

(Choice B, Checked, Correct)

CORRECT (SELECTED)

Yes. Based on both definitions, website B earns more profit for resources utilized.

(Choice C, Incorrect)

INCORRECT

No. The findings of the definitions conflict.

via: khan academy ®

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7 0
1 month ago
Read 2 more answers
: Xem xét 2 nhà đầu tư A và B với đường cầu về cổ phiếu như sau: Nhà đầu tư A: 2P = 300 – 2Q Nhà đầu tư B: P = 150 – 3Q a. Tại m
Zina [12379]

Đáp án:

Giải thích từng bước:

5 0
1 month ago
Isabella built a time travel machine, but she can't control the destination of her trip. Each time she uses the machine she has
babunello [11817]

The likelihood that at least one trip occurs before Isabella's birth is 0.7627.

Step-by-step explanation:

In this scenario, Isabella has invented a time machine, but she lacks control over where she travels. Each use of the device holds a 0.25 probability of leading her to a time preceding her birth. Over the initial year of trials, she operates her machine 5 times. If we assume every journey has an equal chance of going back in time, we can calculate the odds that at least one of these trips occurs before she was born. Here's the calculation:

The probability of traveling to a time prior to her birth is 0.25.

The chance of not traveling back in time, given that the machine is used 5 times:

⇒ (1-0.25)(1-0.25)(1-0.25)(1-0.25)(1-0.25)

⇒ (1-0.25)^5

⇒ (0.75)^5

The probability that at least one trip goes before Isabella's birth is equal to 1 minus the probability of not traveling back to that period:

⇒ 1-(0.75)^5

⇒ 0.7627

Consequently, the chance that at least one trip travels before Isabella's birth is 0.7627.

4 0
1 month ago
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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
Inessa [12570]

Respuesta:

La altitud del globo por encima del nivel del suelo es de 449,6 metros.

Explicación paso a paso:

El enunciado no está completo. El texto completo es: "Un globo se desplaza entre las ciudades A y B, que se encuentran a 1.500 m de distancia. Los ocupantes del globo observan la ciudad A con un ángulo de depresión de 27°, mientras que, para la ciudad B, el ángulo es de 36°. ¿Cuál es la altura aproximada del globo con respecto al suelo?"

El diagrama que ilustra esta situación está en el archivo adjunto. Para calcular la altura del globo, se pueden emplear las funciones trigonométricas, siendo recomendable hacer uso de la función tangente para los ángulos de depresión mencionados:

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 representan la altura desde el suelo y la distancia horizontal desde la ciudad A.

Luego, se igualan las alturas en ambas ecuaciones para calcular la distancia horizontal del globo en relación a la ciudad A:

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

1,237\cdot x = 765\,m

x = 618,432\,m

Por último, la altura del globo sobre el suelo se calcula como:

h = 0,727\cdot x

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

h = 449,600\,m

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

6 0
1 month ago
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