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xxMikexx [17]
3 years ago
13

Responde el siguiente problema de lógica: Al mirar el reloj, vemos que la manecilla de los minutos apunta a un número que casual

mente es igual a la cantidad de minutos que falta para que sean las 12 en punto. Que hora es? Porfavor ayudenme
Mathematics
1 answer:
ANTONII [103]3 years ago
8 0

Answer: 11:50

Step-by-step explanation:

Ok, la manecilla de los minutos apunta al numero X.

si la ora es Y, entonces Y + X = 12:00

podemos asumir que Y es 11:y

y es la cantidad de minutos despues de las 11, es un numero entre 0 y 59 (por que una hora solo puede tener 60 minutos)

Si la manecilla de los minutos apunta al numero 6 por ejemplo, entoces:

y = 11:30 y X = 6 min

X + y = 11:30 + 0:06 = 11:36

Así funciona.

la equacion es:

y = 5*X

y tambien queremos que:

X + y = 60min

reemplazo y por lo de la equacion de arriba:

X + y = X + 5*X = 6X = 60min

X = 10

Si la manecilla apunta al 10, tenemos que:

y = 11:50 y X = 10min

y + X = 11:50 + 0:10 = 12:00

Entonces podemos concluir que la hora es 11:50.

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a card is drawn from a well-shuffled deck of 52 cards. Find the probability of drawing a 9 of spades.
bulgar [2K]

Answer:

1/52

Step-by-step explanation:

To obtain the probability of drawing a 9 of spade from a deck of 52 cards ;

Probability = (number of required outcomes / number of total possible outcomes)

Number of Required outcomes = 1 (there is only one 9 of spade in a deck of 52 cards)

Hence,

P(9 of spade). = 1 / 52

4 0
3 years ago
PLEASE HELP The volume of a cylinder is 72 7 cm. If the radius is 3 cm, what is the height of the cylinder? 3 cm O A. 4 cm B. 24
Vikentia [17]

Answer:

maybe 24

Step-by-step explanation:

6 0
3 years ago
Find the points of intersection of the equation: xy=2 and x+y =4
Blizzard [7]

Answer:\Large\boxed{(2+\sqrt{2},~2-\sqrt{x} )~~and~~ (2-\sqrt{2},~2+\sqrt{x} )}

Step-by-step explanation:

<u>Given the system of equations</u>

1)~xy=2

2)~x+y=4

<u>Divide x on both sides of the 1) equation</u>

xy=2

xy\div x=2\div x

y=\dfrac{2}{x}

<u>Current system</u>

1)~y=\dfrac{2}{x}

2)~x+y=4

<u>Substitute the 1) equation into the 2) equation</u>

x+(\dfrac{2}{x} )=4

<u>Multiply x on both sides</u>

x\times x+\dfrac{2}{x}\times x=4\times x

x^2+2=4x

<u>Subtract 4x on both sides</u>

x^2+2-4x=4x-4x

x^2-4x+2=0

<u>Use the quadratic formula to solve for the x value</u>

x=\dfrac{-(-4)\pm\sqrt{(-4)^2-4(1)(2)} }{2(1)}

x=2\pm\sqrt{2}

<u>Substitute the x value into one of the equations to find the y value</u>

xy=2

(2+\sqrt{2} )y=2

y=2-\sqrt{2}

OR

xy=2

(2-\sqrt{2} )y=2

y=2+\sqrt{2}

Therefore, the points of intersection are

\Large\boxed{(2+\sqrt{2},~2-\sqrt{x} )~~and~~ (2-\sqrt{2},~2+\sqrt{x} )}

Hope this helps!! :)

Please let me know if you have any questions

5 0
1 year ago
Read 2 more answers
1) Find the slope of the line passing through the given points (2, 120) and (1, 60).
EastWind [94]

Answer:

1. 60. 2. -6. 3. -4/5

Step-by-step explanation:

Okay so I haven't done slope in 3 years but I used to be a god at it so please tell me if you get this right and I'm so so sorry if you get them wrong

5 0
3 years ago
Please help! I'm so confused. (please show your work too :D)
Mariulka [41]

Answer:

8 games

Step-by-step explanation:

Sorry can't show my work, but subtract 0.75 from 15.00, 8 times. you'll get 9:00. do the same for Lise. subtract 0.50 from 13.00, 8 times.

The question is asking how much games do they have to play until they have the same amount of money left. They spend money each game, so subtract 0.50 or 0.75 from how much a girl has and that's one game. Keep subtracting and keep score of how many times you subtract from $15.00 and $13.00 until you get the same difference from both equations. Hope this helps!!

7 0
3 years ago
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