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levacccp [35]
3 years ago
13

A bag had 7 orange rocks , 6 green rock , 1 white rock ,7 black rocks , and 2 yellow you randomly pull a rock from the bag ,keep

it out , and then pull out another one .
What is the probability of getting a yellow rock and then a n orange rock ?
Mathematics
1 answer:
daser333 [38]3 years ago
4 0

Answer:

Probability = \frac{7}{253}

Step-by-step explanation:

Given

Orange = 7

Green = 6

White = 1

Black = 7

Yellow = 2

Required

Probability of selecting a yellow then orange rock

From the question, we understand that the probability is that of without replacement.

Since the yellow, is first picked.

We need to determine the probability of picking a yellow rock, first.

P(Yellow) = \frac{n(Yellow)}{Total}

P(Yellow) = \frac{2}{7 + 6 + 1 + 7 + 2}

P(Yellow) = \frac{2}{23}

The rock has reduced by 1;

Next is to determine the probability of picking an orange rock

P(Orange) = \frac{n(Orange)}{Total - 1}

P(Orange) = \frac{7}{7 + 6 + 1 + 7 + 2- 1}

P(Orange) = \frac{7}{22}

The required probability is calculated as thus:

Probability = P(Yellow) * P(Orange)

Probability = \frac{2}{23} * \frac{7}{22}

Probability = \frac{14}{506}

Probability = \frac{7}{253}

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Answer:

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<em />

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3 0
3 years ago
Show work , I’ll vote you brainliest if it is correct . Thank you
kozerog [31]

Answer:

Whats the question to this problem? Do you want to know if it's correct?

i can help! Just show your work? 1/2 times whatever X is + X+1 over whatever X is = 1/2 i can get the answer if you need it unless what i said helped! :) Your welcome!

Step-by-step explanation:

Have a great week! Hope i helped! Plz dont delete answer i promise i will help and it will be correct!

6 0
3 years ago
Please help me i will give u brainliest if it is CORRECT
Oduvanchick [21]
25% is the answer cause there are 4 part 100% of 4 is 25% for each
5 0
3 years ago
Read 2 more answers
A.6/5 divided by -3/2
Dmitriy789 [7]
A is -12/15 (4/5)
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C is 56
D is 8/15
Sorry if any of these are wrong.
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