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
OLEGan [10]
3 years ago
12

A jar contains 38 marbles. It has 10 red, 22 black and 6 green marbles. Two marbles are drawn, the first is not returned before

the second one is drawn. What is the probability that both marbles are black?
P(Both Black) = 11 / 19

P(Both Black) = 231 / 703

P(Both Black) = 231 / 722

P(Both Black) = 121 / 361
Mathematics
1 answer:
Mashutka [201]3 years ago
5 0

<u>Answer:</u>

The correct answer option is 231 / 703

<u>Step-by-step explanation:</u>

We are given that a jar has 38 marbles, out of which 10 are red, 22 are black and 6 are green. Two marbles are drawn and the first marble is not returned when the second one is drawn.

We are to find the probability that both marbles are black.

1st draw: P (black) = \frac{22}{38} =\frac{11}{19}

2nd draw: P (black) = \frac{21}{37}

P (Both Black) = \frac{11}{19} \times \frac{21}{37} = 231 / 703

You might be interested in
5^2= (-5)^2 <br> true or false
Nonamiya [84]
It’s True because of 5 square is equal to 25
Than (-5) square is also get the same value as 5^2
8 0
3 years ago
A box of oranges weighs 4 kg. If one orange weighs 80 g, how many oranges are in the box?
Romashka-Z-Leto [24]

Answer:

50 oranges

Step-by-step explanation:

Convert the measurements for them to be the same ie 4kg to g

1kg=1000g. 4kgx1000=4000g

4000g is the mass of all oranges

1 orange=80g

? =4000g that is 4000/80

=50 oranges

5 0
3 years ago
Both ABC and 3D8 are three digit numbers such that ABC - 3D8 = 269. If 3D8 is divisible by 9, what number does ABC represent?
Nata [24]
3D8 is divisible by 9 ⇒ sum 3+D+8 is divisible by 9
⇒ 11+D=18, D=18-11, D=7
⇒ 3D8= 378
abc - 378 = 269
abc= 269+378
abc= 647

3 0
3 years ago
HELP PLEASEEEE!!!
Naddik [55]

Answer:

45

Step-by-step explanation:

8 0
2 years ago
Find each percent of change.
nlexa [21]
1) 25% increase
2) 30% increase
3) 20% decrease
4) 40% decrease
5) 5% increase
6) 15% decrease
7) 36% increase
8) 39% decrease
7 0
3 years ago
Other questions:
  • 5(x - 3) = 7x 2 Step 1 ⇒ 10(x - 3) = 7x Step 2 ⇒ 10x - 30 = 7x Step 3 ⇒ 3x - 30 = 0 Step 4 ⇒ 3x = 30 Step 5 ⇒ x = 10 Identify th
    7·2 answers
  • I need help with this question can somebody help me please
    5·1 answer
  • Sec2x= ____. select all that apply
    7·1 answer
  • What is the function of the line?
    13·1 answer
  • The linear density in a rod 8 meters long is 10/(sqrt(x 1)) kg/m, where x is measured in meters from one end of the rod. Find th
    6·1 answer
  • You are selling tomatoes for $4 per pound. You have already earned $16 today. How many additional pounds of
    15·2 answers
  • What is a positive angle less than 360 degrees that is conterminal with 540 degrees
    13·1 answer
  • Write an equation in slope-intercept form of the line that passes through the points (7, – 4) and (3, -1).
    7·1 answer
  • A bag contains 3 triangles, 4 squares, 5 pentagons, and 6 hexagons. If one shape is randomly chosen, what is the probability tha
    15·1 answer
  • Find the surface area of the cylinder. Type an exact answer in terms of pi.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!