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Brut [27]
3 years ago
5

en una caja hay 8 canicas cinco rojas y tres verdes y la Bola que se retira no se reemplaza determina Cuál es la probabilidad de

sacar dos bolas verdes​
Mathematics
1 answer:
postnew [5]3 years ago
8 0

Answer: 0.107

Step-by-step explanation:

En una caja tenemos 8 canicas.

5 son rojas

3 son verdes.

Se retira una canica, y no se remplaza.

Quiero calcular la probabilidad de sacar dos canicas verdes.

La probabilidad de sacar una canica verde en el primer intento, es igual al cociente entre el numero de canicas verdes y el numero total de canicas.

p1 = 3/8  

Ahora, en el segundo intento, en la caja voy a tener 2 canicas verdes (por que ya saque una) y 7 canicas en total. Entonces la probabilidad va a ser:

p2 = 2/7.

Y la probabilidad conjunta (es decir, la probabilidad de sacar las dos canicas de color verde) va a ser igual al producto de las probabilidades individuales.

P = p1*p2 = (3/8)*(2/7) = 0.107

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3x + 2 = 3x + 2 pls help me I do not understand
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Answer:

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                 3x + 2

there are no like terms to combine here so the problem stays how it was, so there saying 3x+2 = 3x+2 because they're stating the problem then saying that the answer is the same because there is no like terms her to combine.

Hope this helps,

6 0
3 years ago
Which group of numbers represent a success for a randomly generated list
Verizon [17]
I would say C. as the question is asking for a success of 60% which to me means 6 values and counting C's values ends up being 6 values
8 0
3 years ago
42 point!!!!! Help me answer the question<br><br> Find z<br><br> Compute the m<br> Compute the m
bazaltina [42]

Answer:

z = 110°

w = 80°

x = 0°

Step-by-step explanation:

Start with the 100° angle.  The vertical angle is also 100°.  Supplementary angles add up to 180°, so the angle beside it is 80°.

External angles equal the sum of the opposite internal angles, so the other internal angle is 50°.  The angle supplementary to that is 130°.

The angle supplementary to the 120° angle is 60°.  Angles of a quadrilateral add up to 360°, so the remaining angle is 70°.  This angle is supplementary to z, so z is 110°.

TUVW is a parallelogram (a quadrilateral where opposite angles are congruent).  Therefore, angle W is 80°.  (You could also use the fact that angles of a quadrilateral add up to 360°.)

Angles of a quadrilateral add up to 360°, so:

90 + 84 + 2x + 118 + 2x + 68 = 360

4x + 360 = 360

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6 0
3 years ago
A chef made 30 donuts in 60 minutes. How long would it take him to<br> make 90 donuts?
Snowcat [4.5K]

\bf \begin{array}{ccll} donuts&minutes\\ \cline{1-2} 30&60\\ 90&x \end{array}\implies \cfrac{30}{90}=\cfrac{60}{x}\implies \cfrac{1}{3}=\cfrac{60}{x}\implies x=180

6 0
3 years ago
Read 2 more answers
For this item, any answers that are not whole numbers should be entered as a decimal, rounded to the tenths place. Brian's schoo
blsea [12.9K]

Answer:

  1. The probability that the locker code begins with a prime number is 40%.
  2. The probability that the last digit of the locker code is an odd number is 40%

Step-by-step explanation:

  1. Prime numbers are the numbers that only divide with 1 or itself. So in this case it is 5 and 7.

The possible combinations are

1*4*3 (with 5) +  1*4*3(with 7) = 24

Total combinations are 5*4*3=60

(24/60)*100 = 40 %

     2. Odd numbers are those which don't divide with 2. So in this case it is 6 and 8.

The possible combinations are

1*4*3 (with 6) +  1*4*3(with 8) = 24

Total combinations are 5*4*3=60

(24/60)*100 = 40 %





6 0
3 years ago
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