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
arsen [322]
2 years ago
11

Can someone explain what is domain and range? Gcse math level please

Mathematics
1 answer:
vodka [1.7K]2 years ago
3 0
The domain and range are defined for a relation and they are the sets of all the x-coordinates and all the y-coordinates of ordered pairs respectively. For example, if the relation is, R = {(1, 2), (2, 2), (3, 3), (4, 3)}, then:
Domain = the set of all x-coordinates = {1, 2, 3, 4}
Range = the set of all y-coordinates = {2, 3} take a look at the picture e.g Here, the domain is the set {A,B,C,E}
{
A
,
B
,
C
,
E
}
. D
D
is not in the domain, since the function is not defined for D
D
.

The range is the set {1,3,4}
{
1
,
3
,
4
}
. 2
2
is not in the range, since there is no letter in the domain that gets mapped to 2
2
.
You might be interested in
Solve the system of equations. (HINT: use the elimination method)<br> 7x+4y=2<br> 9x-4y=30
igor_vitrenko [27]

Answer: 7x + 4 y = 2

9x - 4y= 30

-------------------

16x / = 32

x= 32:16

x=2

Step-by-step explanation: 7x+4y=2

7*2 + 4y=2

14 +4y=2

4y= 2-14

4y= -12

y= -12 : 4

y= - 3

4 0
3 years ago
Help my brain cant take it anymore
koban [17]

Answer:

192

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Problems Involving Fundamental Counting Principle
Olegator [25]

The questions are illustrations of combination and probability

  • Combination involves the ways of choosing or selecting an item from a group of items
  • Probability involves the chance of choosing or selecting an item from a group of items

<h3>1. Number of systems to choose from</h3>

The given parameters are:

Monitors = 4

Keyboard = 2

CPU = 4

Printer = 3

The number of systems to choose from is:

n = 4 * 2 * 4 * 3 = 96

Hence, Patrick can choose from 96 systems

<h3>2. Combination of Ice cream</h3>

The given parameters are:

Containers = 2

Flavors = 4

The number of total combination to choose from is:

n = 2 * 4C3 = 8

Hence, the number of total combination is 8

<h3>3. Emma dressing up</h3>

The given parameters are:

Blouse = 5

Skirt = 3

Shoes = 4 pairc

The number of ways to dress up:

n = 5 * 3 * 4 = 60

Hence, Emma can dress up in 60 ways

<h3>4. Members of committee</h3>

The given parameters are:

Students = 6

Members of committee = 3

The number of ways to form a committee is:

n = 6C3 = 20

Hence, there are 20 ways to form the committee

<h3 /><h3>5. Probability of consonant</h3>

We have:

Letters = 11

Consonnats = 7

The probability of selecting a consonant is:

P = 7/11

P = 0.636

Hence, the probability of selecting a consonant is: 0.636

<h3>6. Probability of not selecting a grade 8 student</h3>

We have:

Total students = 34

Students not in grade 8 = 25

The probability that a student is not in grade 8 is:

P = 25/34

P = 0.735

Hence, the probability that a student is not in grade 8 is 0.735

<h3>7. Probability of a secondary color </h3>

Not enough details to solve

<h3>8. Probability of a prime number</h3>

There are 9 prime numbers in a total number of 31 numbers from 4 to 34.

So, the probability that a number is prime is:

P = 9/31

P = 0.290

Hence, the probability that a number is prime is 0.290

Read more about combination and probability at:

brainly.com/question/24756209

brainly.com/question/11732255

5 0
3 years ago
PLEASE HELP ME PLEASEEEEEE!!!!!!!!!!Which is the range and interquartile range for the data represented by the box-and-whisker p
Novay_Z [31]

the range is 39-18= 21

IQR is 35-21=14 

3 0
3 years ago
Add 2 1/3 + 4 5/8 write your answer as a mixed number
Yanka [14]
6+1/3+5/8
6+1x8/3x8+5x3/8x3
6+8/24+15/24
6+8+15/24
6 23/24

Answer: 6 23/24

5 0
2 years ago
Other questions:
  • Which answer is the slope of of the line with equation 5x+y=15
    10·1 answer
  • A boat has a speed of 9 mph in calm water. It takes the boat 4 hours to travel upstream but only 2 hours to travel the same dist
    15·2 answers
  • The perimeter of a rectangle is 400 meters. The length is 15 meters less than the width. Find the length and width
    13·1 answer
  • Thirty is 12% of what number?
    6·1 answer
  • Divide $500 in the ratio 1:4
    12·2 answers
  • A rectangular wall measures 1,620 centimeters by 68 centimeters. need the area of the wall
    5·1 answer
  • What does the law of demand state?
    11·1 answer
  • Find the area of the shape shown below.
    6·2 answers
  • Help me plez i will mark brainlist
    14·2 answers
  • Writing to Explain In the equation x-3.5 = 7.2, why cant you just add 3.5 tonone side of the equation to get x alone? I'll give
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!