1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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}

You might be interested in
3.9 practice complete your assignment english 111
Citrus2011 [14]
The answer is 15.9 because 3.9+111=15.9
3 0
3 years ago
What is the Answer to this problem 75x+2=
pashok25 [27]
75x+2=
75x-2=-2. move the 2 to the other side
75x=-2 now divide 75 both sides

75/75x=-2/75
x=-2/75
4 0
3 years ago
If X = 2 inches, Y = 8 inches, W = 4 inches, and Z = 4 inches, what is the area of the object?
max2010maxim [7]

Answer:

C. 63 square inches

4 0
2 years ago
Shelley's pet food store sold one customer 5 peanut butter biscuits for $3. She sold another customer 7 beef treats for $4.20. W
arsen [322]

Given that,

Shelley's pet food store sold one customer 5 peanut butter biscuits for $3. She sold another customer 7 beef treats for $4.20.

For peanut, the cost is ratio is

\dfrac{5}{3}

For beef, the ratio is

\dfrac{7}{4.2}

If we take cross product of these items,

\dfrac{5}{3}=\dfrac{7}{4.2}\\\\5\times 4.2=3\times 7\\\\21=21

It implies, that the sale is in true proportion. From the cross product, we find that it is equal.

7 0
3 years ago
Read 3 more answers
PLEASE HELP MEH I NEED THIS HELP PLSSSSSSSSSSSSS
zubka84 [21]

Answer:

I would say A but I'm not sure

Step-by-step explanation:

Sry if I' m wrong <3

5 0
3 years ago
Read 2 more answers
Other questions:
  • 23. Caleb has 42 rolls of dimes. Each
    12·1 answer
  • Can someone help me please? I don't know how to do this problem, could someone explain step by step? It would be greatly appreci
    5·2 answers
  • What is a monthly finance charge if the average daily balance is $30, the daily periodic rate is 0.07% and the number of days in
    10·2 answers
  • Please help I need answers ASAP
    13·1 answer
  • Why is it incorrect to say that 5o percent heritability of intelligence means that the cause of your intelligence is 50 percent
    13·1 answer
  • Help will mark Brainly
    10·1 answer
  • Find the value of x to the nearest tenth!
    13·1 answer
  • Helpppppp pleaseeeeeeeeee
    12·2 answers
  • Mr. Hosley has a brother that is 6 years older. Together their ages are 106. How old is each of these siblings?
    6·2 answers
  • If you rotate a equilateral triangle by a side, what is the name of the resulting 3d shape
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!