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]
3 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]3 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]3 years ago
7 0

Answer:

6

Explanation:

You might be interested in
Which of the<br>following is a<br>metamorphic rock?​
aleksandr82 [10.1K]

Answer:

tell the following first

5 0
3 years ago
When more energy enters than exits the earth system, what happens to temperatures on earth?.
Artist 52 [7]

Answer:

Earth Grows Warmer

Explanation:

If the imbalance is positive and more energy enters the system than exits, Earth grows warmer. If the imbalance is negative, the planet grows cooler.

4 0
2 years ago
Is there ice on the moon?
k0ka [10]
Liquid water cannot persist at the moon's surface, and water vapor is decomposed by sunlight, with hydrogen quickly lost to outer space. However, scientists have since the 1960s conjectured that water ice could survive in cold, permanently shadowed craters at the Moon's poles.

hope I helped :-)  
3 0
3 years ago
Why are earthquakes more common in California than the midwest states.
Artist 52 [7]

It's because there are bigger faults in Caliifornia.Which is San andres which is 800 miles which cuts through California.We all know earth is contesntly changing, and earthquakes are apart of earth chaging.So every times the tictonic plates moves it causes California, and other states close by to aswell, but not as bad.

4 0
3 years ago
Read 2 more answers
Which one is the largest desert in the world ? <br> a. sahara <br> b. gobi
Korolek [52]
A. It would be the Sahara Desert.
8 0
3 years ago
Other questions:
  • The Nile river was important in Egyptian life earthly life.What role did it play in Egyptian afterlife
    13·1 answer
  • Which of the following words is used to categorize the terms “Hispanic” or “Latino,” according to the US Census?
    6·1 answer
  • What conditions prevent trees from growing in the tundra ?
    13·2 answers
  • Which of the following countries has declared itself nuclear free
    9·1 answer
  • From the stand point of geography, a(n)____ is an internal rendering of an individual's knows world.
    14·2 answers
  • Pls help me i'll give brainlyest
    8·2 answers
  • What is the climate type in Central Africa near the Congo River?
    7·1 answer
  • In September 2014, Scotland’s population voted not to separate from the United Kingdom. Why were so many nations around the worl
    7·1 answer
  • How are changes in the earth similar to changes in human beings
    8·2 answers
  • A half-moon shaped area of land where small villages began to form<br> ?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!