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Yanka [14]
2 years ago
8

A bag contains 5 red cubes and 7 white cubes. celinda will select one cube put it in her pocket and select a second cube which e

xpression gives the probability that she will select two red cubes ?
(a-5/12 x 5/12
(b-5/12 x 4/12
(c-5/12 x 5/11
(d-5/12 x 4/11
-Sky
Mathematics
2 answers:
andrezito [222]2 years ago
7 0
If she picked a red cube then there would be 4 red ones and from 12 cubes there would be 11 left
 so the answer is D 5/12 x 4/11
sergij07 [2.7K]2 years ago
5 0
I’d say D.) but I’m not entirely sure it’s been a while since I did this but I did it lol good luck
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Answer:

a > -2

Step-by-step explanation:

-12a +7<31

Subtract 7 from each side

-12a +7-7<31-7

-12a <24

Divide by -12, remembering to flip the inequality

-12a/-12 >24/-12

a > -2

7 0
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Read 2 more answers
a red ball and 4 white ball are in a box if two balls are drawn without replacement ,what is the probability of getting a red ba
BARSIC [14]

The probability is 1/5 to get a red ball in 1st draw and a white ball in 2nd draw.

<u>Step-by-step explanation:</u>

  • There are 1 red ball and 4 white balls in a box.
  • The total number of balls in the box = 1 red + 4 white = 5 balls.

The two balls are drawn without replacement.

<u>Drawing the first ball :</u>

The first draw should be a red ball.

The probability to get a red ball = No.of red balls / Total balls in the box.

We know that, No. of red balls is 1 and total balls in the box is 5.

P(red ball) = 1/5

<u>Drawing the second ball :</u>

The second draw should be a white ball.

The probability to get white ball = No.of white balls / Total balls in the box.

We know that,

No. of white balls is 4.

The total balls in the box after the first draw will be 4 balls.

P(white ball) = 4/4

The probability of getting a red ball on the first drawn and a white ball on the second​ draw = P(red ball) × P(white ball)

⇒ (1/5) × (4/4)

⇒ 4/20

⇒ 1/5

Therefore, the probability is 1/5 to get a red ball in 1st draw and a white ball in 2nd draw.

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2 years ago
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MArishka [77]

your answer is A..It would be the best choice

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e-lub [12.9K]

Answer:

C

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

You can divide the number of pages by the number of minutes to find the amount of minutes it takes to read 1 page. For Arnold, 3 pages / 7 minutes = 1 page per approximately 0.43 minutes. For Brenda, 8 pages / 14 minutes = 1 page per approximately 0.57 minutes. Brenda reads slightly faster since 0.57 > 0.43

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