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
AlladinOne [14]
3 years ago
7

Suppose a jar contains 5 red marbles and 25 blue marbles. If you reach in the jar and pull out one marble at random, do not repl

ace the marble, and reach in the jar to pull out a second marble. Find the probability that both are red. Write your answer as a reduced fraction.
Mathematics
1 answer:
dsp733 years ago
8 0

Answer:

Probability that event will have both red marbles will be 2.3% or 0.023.

Step-by-step explanation:

Given:

Total red marbles=5

Total blue marbles=25

Total number of marbles =30

To Find:

The probability that both are red without replacement of marbles.

Solution:

Now

Total sample space is 30 and total red marbles are 5

For a event that getting red marble probability is ,

=Total red marbles /total marbles.

=5/30

=1/6

So probability if getting red marble is 1/6

<em>Now for second chance there will be 4 red marbles remaining and 29 total marbles so,</em>

In second chance  probability if getting red marble will be

=total red marbles present/total marbles remaining

=4/29

Now ,

The required probability will be getting both at a time

i.e probability getting red AND red marble so here AND operator which means multiple both the probability.

Probability both will have red =1/6*4/29

=4/(29*6)=2/(29*3)

=0.022988

=0.023

=2.3 %

You might be interested in
Christy subtracted to find her jogging rate for each time period and said that her rate
bulgar [2K]

Answer:

No, Christy subtracted to find her jogging rate. Not added.

Step-by-step explanation:

The common diffrnece is +4 so she whould have to add. I hope this helps

5 0
2 years ago
What is the sum of the arithmetic series
docker41 [41]

Answer:

S_ {12} = 192

Step-by-step explanation:

The nth term of the given arithmetic sequence is

U_n = 3 + 2n

The first term of this series is:

U_1 = 3 + 2(1) = 5

The last term of this series is when

n = 12

U_ {12}= 3 + 2(12)

U_ {12}= 3 + 24 = 27

The sum of the first n terms of an arithmetic series when the first an last term is known is given by:

S_n =  \frac{n}{2}(a + l)

Where a=5 is the first term and l=27 is the last term.

S_ {12} =  \frac{12}{2}(5 + 27)

S_ {12} =6(32) =19 2

6 0
3 years ago
Please help me look at the picture
harina [27]

The answer is choice A.

We're told that the left and right walls of the cube (LMN and PQR) are parallel planes. Any line contained in one of those planes will not meet another line contained in another plane. With choice A, it's possible to have the front and back walls be non-parallel and still meet the initial conditions. If this is the case, then OS won't be paralle to NR. Similarly, LP won't be parallel to MQ.

8 0
3 years ago
3a) There were 25 red markers, 32 blue markers, and 38 green markers in a tub. Explain how you would construct a bar graph for t
Tema [17]

Answer:

Step-by-step explanation:

you would show x and y lines and title frequency to side and colours to bottom

0-40 on the y axis title is frequency

and on bottom graph put the colours. red blue and green always using equal intervals for names or time or colours along the x axis.  

5 0
2 years ago
Read 2 more answers
URGENT HELP PLS PLS PLS
Gennadij [26K]

Answer:

15 kg

Step-by-step explanation:

Radius of a solid sphere : mass of a solid sphere

3 cm : 9 kg

Find the mass of a sphere of the same material of radius 5 cm

Radius of a solid sphere : mass of a solid sphere

5 cm : x kg

Equate both ratios to find x

3 cm : 9 kg = 5 cm : x kg

3/9 = 5/x

3 * x = 9 * 5

3x = 45

x = 45/3

x = 15 kg

The mass of a sphere of the same material of radius 5 cm is 15 kg

7 0
3 years ago
Other questions:
  • Of the runners in a marathon through Northeastern Pennsylvania, 94.12% finished the race. If 2,125 runners started the race, how
    14·2 answers
  • Which of the following is most likely the next step in the series?
    5·2 answers
  • Which of these is an example of a non-random sample?
    8·1 answer
  • 64.135=10.1(4.7+c)/2 What is the value of c
    13·1 answer
  • What is √9 (a very dum question)
    6·2 answers
  • PLEASE THIS IS TIMED what is the slope of the line shown ? <br>( its a number answer) ​
    6·2 answers
  • PLEASE HELP MEEE AM BEING TIMED
    11·2 answers
  • (i) Factorise the expression x^3 + 3x - x^2 - 3 completely.
    10·1 answer
  • 5. Alex invests $18,100 at 13.6% compounded quarterly for 10 years. How much it be worth in the end?
    15·1 answer
  • Answer Asap!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!