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
lara31 [8.8K]
2 years ago
12

In a box there are six envelopes each containing two cards. Three of the envelopes contain two red cards, two of them contain a

red and a black card, and the last one contains two black cards. An envelope is selected at random and a card is withdrawn and found to be red. What is the chance the other card is black?
Mathematics
1 answer:
Sphinxa [80]2 years ago
5 0

Answer:

\frac{2}{5}

Step-by-step explanation:

3 envelopes having 2 red card

2 envelopes having 1 red card and 1 black card

1 envelope having 2 black cards

We are given that . An envelope is selected at random and a card is withdrawn and found to be red.

So, No. of ways of envelope having red card = 3+2 = 5

No. of required ways of envelope having 1 red card and 1 black card = 2

So, probability of getting an envelope having 1 red card and 1 black card = \frac{2}{5}

Hence The chance the other card is black is \frac{2}{5}

You might be interested in
Which point is not on the graph represented by y=x^2+2x-4
Illusion [34]
(-6,20) \\
x=-6 \\ y=20 \\ \Downarrow \\
20 \stackrel{?}{=} (-6)^2+2 \times (-6)-4 \\
20 \stackrel{?}{=} 36-12-4 \\
20 \stackrel{?}{=} 20 \\
20 = 20 \\
\hbox{the point is on the graph}

(-4,4) \\
x=-4 \\ y=4 \\ \Downarrow \\
4 \stackrel{?}{=} (-4)^2+2 \times (-4)-4 \\
4 \stackrel{?}{=} 16-8-4 \\
4 \stackrel{?}{=} 4 \\
4 = 4 \\
\hbox{the point is on the graph}

Both points are on the graph.
3 0
3 years ago
What are the domain and range of the function below?
jekas [21]

Answer:

Domain: all real numbers

Range: all real numbers greater than or equal to -2

Step-by-step explanation:

The domain is the set of x-coordinates.

It is the set of real numbers since x can be any real number.

The range is the set of y-coordinates.

The minimum value for y is -2. y can be -2 or any real number greater than -2.

Answer:

Domain: all real numbers

Range: all real numbers greater than or equal to -2

6 0
3 years ago
Read 2 more answers
Each face of a six-sided cube is painted a different color. The cube is rolled twice and a coin is flipped. How many different p
Vaselesa [24]

Answer:

72

Step-by-step explanation:

There are 6 possible outcomes for the first roll, 6 possible outcomes for the second roll, and 2 possible outcomes for the coin flip. Since all of the events are independent, you can simply multiply these together to get a total of 72 outcomes. Hope this helps!

7 0
3 years ago
Read 2 more answers
3 is what percentage of 5
cupoosta [38]

Answer:

60%

Step-by-step explanation:

is means equals and of means multiply

3 = P * 5

divide each side by

3/5 = P

.6 = P

Change to a percentage by multiplying by 100

60%

6 0
2 years ago
Read 2 more answers
Based on the table below, find the input and output values of the function.
tamaranim1 [39]

Answer:

the inputs are: 0,1,2,8,12

the outputs are: 19,9,7,16,17

(Put them in order if needed)

**inputs are x values and outputs are the y values**

8 0
2 years ago
Other questions:
  • If a copier contains 60% letter-size paper and 40% legal-size paper, what is the ratio of letter-size paper to legal-size paper?
    12·2 answers
  • The table of values shows the output values of three different equations for the same
    5·1 answer
  • 98 is the product of Chrissy's height and 7 how do I make this a equation
    12·2 answers
  • Find the value of x. Then find the angle measures of the polygon.
    11·1 answer
  • Sunil earns $12 in one hour d=hours and h=hours
    8·1 answer
  • Victoria is counting all of quarters and dimes from the family piggy bank for the month. If there are 12 times as many dimes are
    12·1 answer
  • Explain what one it is and why pls and thank you
    6·2 answers
  • How many ways can you arrange 28
    7·1 answer
  • PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
    14·1 answer
  • A rectangular swimming pool has a length of l yards and a width 5 yards less than its length. How much does it cost to border th
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!