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
LiRa [457]
3 years ago
7

A box contains four blue and eight red balls. Jim and Jack start drawing balls from the box, respectively, one at a time, at ran

dom, and without replacement until a blue ball is drawn. What is the probability that Jack draws the blue ball?
Mathematics
1 answer:
aleksandrvk [35]3 years ago
5 0

Answer:

the probability that Jack draws the blue ball is 0.38539

Step-by-step explanation:

Given the data in the question;

box contains

blue balls = 5

red balls = 8

Jim and Jack start drawing balls from the box, respectively, one at a time, at random, and without replacement

Now,

on the first attempted;

⇒ ( 8/13) × ( 5/12) = 10/39  

on the second attempt;

⇒ ( 8/13 ) ( 7/12) ( 6/11 ) ( 5/10 ) = 14/143

on the third attempt;

⇒ ( 8/13 ) ( 7/12) ( 6/11 ) ( 5/10 ) ( 4/9 ) ( 5/8 ) = 35/1287

on the fourth attempt;

⇒  ( 8/13 ) ( 7/12) ( 6/11 ) ( 5/10 ) ( 4/9 ) ( 3/8 ) ( 2/7 ) ( 5/6 ) = 5/1287

so we add everything;  

⇒ 10/39 + 14/143 + 35/1287 + 5/1287

= 0.38539

Therefore, the probability that Jack draws the blue ball is 0.38539

You might be interested in
(1 point) A cup of coffee at 100 degrees celsius is put into a 30 degree celsius room when t=0. The coffee's temperature, f(t),
Lapatulllka [165]

Answer:your question seems incomplete but if you looking to find the resulting equation to solve for temperature at a particular time you can use this 28t^2

Step-by-step explanation:

F'(t) = 7(0.8)t

Integrating the RHS

Temp= integral of f'(t)= 28t^2

Therefore, T(°c)= 28t^2

3 0
2 years ago
Help me find the missing sides
andrew-mc [135]

Answer:

ab= 11 and bc = 8

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
1. Identify a pair of alternate exterior angles.
KonstantinChe [14]

Answer:

d. ∠2 and ∠6

Step-by-step explanation:

Definition : Alternate Exterior Angles are a pair of angles on the outer side of each of those two parallel lines but on opposite sides of the transversal.

Option a. ∠3 and∠4

These angles are interior angles.

Option b . ∠1 and∠2

These angles are linear pair.

Option c . ∠1 and ∠6

These angles are outer angles

Option d . ∠2 and ∠6

According to the definition of alternate evterior angles . ∠2 and ∠6 are alternate exterior angles

Hence Option d is pair of alternate exterior angles.

4 0
2 years ago
-3w=-w-6. How many solutions
GaryK [48]
There is one solution: w=3
6 0
2 years ago
The state fair charges $14 for
Scrat [10]

Answer:

s=6r+14

Step-by-step explanation:

we know that

The linear equation in slope intercept form is equal to

s=mr+b

where

m is the slope or unit rate of the linear equation

b is the y-intercept or initial value

In this problem we have

The slope is equal to

m=\$6\ per\ ride

The y-intercept is equal to

b=\$14

so

substitute the given values

s=6r+14

5 0
3 years ago
Other questions:
  • Show all work please
    5·1 answer
  • Which of the following represents "eight more than twice a number is fifty"?
    6·2 answers
  • What is the Answer to this problem 75x+2=
    7·1 answer
  • Which of the following pair(s) of circles have /as a common internal tangent? Select all that apply.
    11·1 answer
  • Please solve <br> thankyou in advance x
    9·1 answer
  • Which property is used in the following expression ? 5(2 + 7) = 10 + 35
    6·1 answer
  • 10cm 3mm - 4.8cm<br> I do not understand that well can someone please help no need to explain
    14·2 answers
  • Can y’all help plz thx
    11·2 answers
  • 1) ab (c² + 1) - C (a² + b²)​
    8·2 answers
  • If your not in 5th or higher grade don't answer my question
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!