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
olya-2409 [2.1K]
3 years ago
6

A bag contains eight green marbles and four blue marbles. what is the probability of drawing a green marble on the second draw?

Mathematics
1 answer:
Stolb23 [73]3 years ago
3 0
<span>2/3 probability of drawing a green marble on the second draw. If the marbles are replaced after each draw, the probability will always be 2/3 of a green marble being drawn. But for this problem, going to assume that the marbles are not replaced after each draw. So we have 2 possible scenarios. 1. The first marble drawn is green This even happens with probability of 2/3 and leaves you with 7 green marbles and 4 blue marbles. So the probability of picking a green marble again is 7/11. 2. The first marble drawn is blue This event happens with probability of 1/3 and leaves you with 8 green marbles and 3 blue marbles. So the probability of picking a green marble this time is 8/11 The total probability of picking a green marble on the 2nd pick is the sum of the product of each probability. So 2/3 * 7/11 + 1/3 * 8/11 = 14/33 + 8/33 = 22/33 = 2/3</span>
You might be interested in
Somebody who knows how to do this?? plz answer all the questions correctly thanks!
Ksju [112]

Answer:

a) 5/21

b) 4/21

c) 4/21

d) 8/21

Step-by-step explanation:

total number of coins: 21

a) number if dollars: 5

therefore fraction is 5/21

b) number of quarters: 4

therefore fraction is 4/21

c) number of dimes: 4

therefore fraction is 4/21

d) number of nickels: 8

therefore fraction is 8/21

4 0
3 years ago
. Laura and Alicia both exercise 5 days a week. Laura exercises for 30 minutes each day. Alicia exercises for 45 minutes each da
statuscvo [17]

Answer: 1 hour 15 minutes

Step-by-step explanation:

From the question, we are informed that Laura and Alicia both exercise 5 days a week and that Laura exercises for 30 minutes each day. For the 5 days, she'll exercise for:

= 5 × 30 minutes

= 150 minutes

= 2 hours 30 minutes

Alicia exercises for 45 minutes each day. Fir the 5 days, she'll exercise for:

= 5 × 45 minutes

= 225 minutes

= 3 hours 45 minutes

We then calculate the difference in their exercise per week which will be:

= 3 hours 45 minutes - 2 hours 30 minutes

= 1 hour 15 minutes

6 0
3 years ago
You have a jar with 91 raisins. How many are left after you have eaten some?
Lemur [1.5K]

Answer: you choke and die by the time you hit 41 left :)

5 0
4 years ago
Solve 2x+7=x-3 Please can u show your working out
Korolek [52]
X= -10
You may review the image Ive attached to see how I got this answer.

7 0
3 years ago
Read 2 more answers
What value of x makes the equation below true 6x-7=26
VikaD [51]

Answer:

11/2

Step-by-step explanation:

6x−7=26

Step 1: Add 7 to both sides.

6x−7+7=26+7

6x=33

Step 2: Divide both sides by 6.

x= 11/2

6 0
3 years ago
Read 2 more answers
Other questions:
  • Match each percent amount to its correct value. Tiles 15% of 30 30% of 45 60% of 7 23% of 20 Pairs 13.5 arrowBoth 4.5 arrowBoth
    6·2 answers
  • Find the exact solution to the equation. 7-log2(x+5) = 6
    14·1 answer
  • Using the attached sheets of grid paper, come up with evidence supporting the Pythagorean Theorem and it’s converse. Sketch and/
    8·2 answers
  • Mary Stevens earns $6 an hour at her job and is entitled to time-and-a-half time for overtime and double time on holidays last w
    13·1 answer
  • A box is hit with a 280 N force for .08 seconds. What is the impulse on the box?
    9·1 answer
  • Plz help me I am <br> Stuck
    6·1 answer
  • HELP ME ASAP!!!!!!!!!!!
    12·2 answers
  • the sum of the digits of a two number is 14 .if 36 is substracted from the number,the places of the digits are reversed.find the
    12·1 answer
  • Simplify: a²b⁵c<br> ______<br> a⁴bc³​
    6·1 answer
  • Please help me please help help me help please
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!