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
gregori [183]
4 years ago
6

There are 10 marbles in a bag, and the marbles are either red or blue. Eric will randomly choose two marbles from the bag, witho

ut replacing the first one. How many BLUE marbles are in the bag given that the probability of both marbles will be red is 2 15 ?
Geography
2 answers:
zimovet [89]4 years ago
7 0

Answer:

6 blue marbles

Explanation:

(red / 10) * (red minus one / 9)

r(r-1)/90

2/15 = 12/90

r(r-1)/90 = 12/90

r² - r = 12

r² - r - 12 = 0

(r + 3)(r - 4) = 0

r = -3 or r = 4

red = 4; blue = 6

grigory [225]4 years ago
7 0

Answer:

6

Explanation:

You might be interested in
The Cocos Plate is located at the following approximate latitude and longitude:
Sidana [21]

Answer:

2

Explanation:

3 0
3 years ago
Read 2 more answers
What is China’s major land problem?
stira [4]
Property rights. The rapid growth of cities has led to government transfers of rural land to urban and industrial uses. Inadequate compensation to farmers whose property rights have been poorly defined has fueled growing civil unrest, while urban leaseholders seek to strengthen their new property rights.
Property tax implementation. Recent tax reform has reduced local government revenues and prompted local officials to rely on land sales receipts, fees, and off-budget revenues to finance government expenditures. China’s government is seeking to implement a property tax as a local revenue source to take advantage of the rapid growth of the real estate market.
Farmland preservation. The large amount of land removed from agricultural production by the complex forces of urbanization has exacerbated concerns about farmland preservation, especially related to food security.
Urban planning and development. Rapid urbanization has also resulted in increased urban poverty, housing affordability problems, inequality between urban and rural population groups, regional disparities, and other social and economic challenges. China’s urban planning practices are in need of reform to better reflect market forces and economic behavior.
Environmental sustainability. China’s economic and demographic changes over the past 30 years have been associated with severe environmental degradation. With rapid urbanization forecast over the next decade, there is growing consensus that China must find a more sustainable development model. More sustainable cities are integral to any low-carbon development trajectory.
3 0
3 years ago
What effect does latitude have on solar energy distribution (the amount of sun’s rays and heat)?
telo118 [61]

Answer:

The further the latitude away from 0, the less solar energy distribution.

Explanation:

As you get away from the latitude of zero in a northern or southern direction, the energy distribution will decrease, due to the colder climate as you go south or north.

7 0
3 years ago
Which Ssi unit would be most appropriate for expressing the mass of an animal
Kryger [21]

answer

si unit will be kilogram kg

3 0
3 years ago
Theozone is made up of how many atoms and what are they
Juli2301 [7.4K]
The ozone layer is comprised of ozone, an atom which is constructed of 3 oxygen molecules.
Hope that helped =)
7 0
3 years ago
Other questions:
  • What is the capital of "India" ?
    14·2 answers
  • Camels are called “ships of the desert” and “atta allah” (gift of god). Why
    6·1 answer
  • If angle 1 = 7x-19 and angle x+5 find angle 2
    8·1 answer
  • Which statement describes the principles of the Nationalist party?
    5·2 answers
  • Why were Africa's problems NOT solved by independence?
    15·2 answers
  • Nonrenewable resources
    6·1 answer
  • The microbial organisms that cause food to spoil are generally the same that cause food borne disease A. True B. False
    13·1 answer
  • Stretching from Vietnam to India, __________ is a highland area where ethnic groups who wish to be left alone, ungoverned, and u
    9·2 answers
  • Is an earthquake kinect or potential energy
    7·2 answers
  • Di si son verdaderas (V) o falsas (F) las siguientes afirmaciones:
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!