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
Iteru [2.4K]
3 years ago
9

A bag contains six red and ten black marbles if you pick a marble from the bag what is the probability that the marble will be b

lack.If you pick a marble record it’s color and return it to the back 200 times how many times can you expect to pick a black marble
Mathematics
1 answer:
dimulka [17.4K]3 years ago
6 0

Answer:

125

Step-by-step explanation:

The total number of marbles is 6+10 = 16

P (black) = black / total

               = 10/16  = 5/8

With 200 draws, take the probability of P(black) times 200 since the marble is returned each time

200 * (5/8) = 125

We would expect to get 125 black marbles

You might be interested in
What is the solution of the system? Use the elimination method. 2x+y=20 6x?5y=12
Whitepunk [10]

Answer:

(22, - 24)

Step-by-step explanation:

Multiply the first equation by -5 to make the y's so you can add the up to zero.

-5(2x + y = 20)

-10x - 5y = -100  Add the second equation thn solve for x

<u> 6x + 5y = 12  </u>

-4x = -88  

x = 22

Plug 22 in for x in either equation

2x + y = 20

2 (22) + y = 20

44 + y = 20

y = -24

3 0
3 years ago
Read 2 more answers
Plzzzzz hellllppppp!!!!
Mashutka [201]
Y=x3 +2 is the answer
8 0
3 years ago
Which number contains digits where the hundreds digit is 10 times as great as the tens digit? 7,988 , 7,898 , 7,889
grigory [225]
Answer : 7,889

Hundreds digit : 800
Tens digit : 80

800 ÷ 80 = 10 (800, the hundreds digit, is 10 times as great as the tens digit, 80)
5 0
3 years ago
Help ASAP I’ll mark you as brainlister
AnnyKZ [126]

Answer:

12\pi by 18\pi write it down

Step-by-step explanation:

add it

4 0
3 years ago
Read 2 more answers
Simplify The following equations
Kryger [21]
Mostly collect like terms
use associative property which is
(a+b)+c=a+(b+c)
and remember that:
you just use a general rule
x+x=2x
x^2+x^2=2x^2
3xy4xy=7xy
3x+4x^2=3x+4x^2
you can only add like terms( like terms are terms that are same name like x or y are differnt, and like terms have same power exg x^2 and x^3 and x^1/2 and such


so first one



3b+11c-4c-c
since they are all c except for the first one term, just assign a number for each so it simplifies to c times(11-1)+b(3-4)=c(10-1b=10c-b or

you just use a general rule
x+x=2x
x^2+x^2=2x^2
3xy4xy=7xy
3x+4x^2=3x+4x^2




second one9a-1+8c-8a+c
group like terms
(9a-8a)+(8c+c)-1=(a)+(9c)-1=a+9c-1

12c+5a+7-13c+4a
group like terms(12c-13c)+(5a+4a)+7
add like terms
-c+9a+7
the solution is 9a-c+7


-15-6c+3b-6c+9-2b
group like terms
(-15+9)+(-6c-6c)+(3b-2b)
-6+(-12c)+b=b-6-12c



the answers are:

10c-b

a+9c-1

9a-c+7

b-12c-6

5 0
3 years ago
Other questions:
  • 25^(x+7)=125^(x-10)​
    14·2 answers
  • WILL MARK BRAINLIEST!!!!
    7·1 answer
  • You roll two dice. Let event A be "The first die shows a 2,a 3, or a 5" and event B be "The second die shows an odd number." Wha
    14·2 answers
  • What's the LCM of 3,4,6,and8
    13·1 answer
  • -0.4a + 3 = 7 <br> a = <br> plz help
    14·1 answer
  • 8/180.0 i really need this anwser kid version for my kid pls and i would help but i also dont know
    7·1 answer
  • What is 61% of 524? <br> Thanks
    11·2 answers
  • An Inscribed angle with a diameter as a side has measure x degrees ? If the ratio of m overline AD to mDB is 1:4, what is mDB? (
    10·1 answer
  • 7/3 + x=3;x math I really need help
    8·1 answer
  • which statement couls be used to explain why the function h(x)=x³ has an inverse relation that is also a function ​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!