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
lora16 [44]
2 years ago
7

Is this a funtion? please help

Mathematics
1 answer:
creativ13 [48]2 years ago
3 0

Answer:

No, it is not

Step-by-step explanation:

Here, we want to check if what we have is a function

For a relation to be a function, the mapping must be one to one or many to one

This mean, for every x there must be one y or for every y, there must can be multiple x

But never is it that there are many y for a single x

Looking at the value 0

on the domain, we can see -2 and 1 as the values

Thus, this is not a function

You might be interested in
Callie read for 4 hours last week. Luis read 6 times as long. Write an equation to show how long Luis read.
zysi [14]

Answer: 24

Step-by-step explanation:  Multiply 4 by 6 to get 24

7 0
3 years ago
Read 2 more answers
If we recall that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side, which
Inga [223]

Answer:

Step-by-step explanation:

the first ine make sense to me

if not right sorry

7 0
2 years ago
A car dealership sells 0, 1, or 2 luxury cars on any day. When selling a car, the dealer also tries to persuade the customer to
melisa1 [442]

Answer:

Mean = 1.42

Variance = 0.58

Step-by-step explanation:

Given: X denote the number of luxury cars sold in a given day, and Y denote the number of extended warranties sold.

Also, joint probability function of X and Y are given.

To find:

mean and variance of X

Solution:

From the given joint probability function of X and Y,

P(X=0)=\frac{1}{6}\\P(X=1)=\frac{1}{12}+\frac{1}{6}=\frac{1+2}{12}=\frac{3}{12}\\P(X=2)=\frac{1}{12}+\frac{1}{3}+\frac{1}{6}=\frac{1+4+2}{12}=\frac{7}{12}

Mean of X:

E(X)=\sum XP(X)\\=0\left ( \frac{1}{6} \right )+1\left ( \frac{3}{12} \right )+2\left ( \frac{7}{12} \right )\\=0+\frac{3}{12}+\frac{14}{12}\\=\frac{17}{12}=1.42

Variance of X:

E(X^2)=\sum X^2P(X)\\=0^2\left ( \frac{1}{6} \right )+1^2\left ( \frac{3}{12} \right )+2^2\left ( \frac{7}{12} \right )\\=0+\frac{3}{12}+\frac{28}{12}\\=\frac{31}{12}

var(X)=E\left [ X^2 \right ]-\left ( E\left [ X \right ] \right )^2\\=\frac{31}{12}-\left ( \frac{17}{12} \right )^2\\=\frac{31}{12}-\frac{289}{144}\\=\frac{372-289}{144}\\=\frac{83}{144}\\=0.58

5 0
3 years ago
The minute hand of a clock is 7 inches long. How far does the tip of the minute hand move in 5 minutes? If necessary, round the
FromTheMoon [43]

The movement of the minute hand is circular.

Tangence speed is V=2Rπ/T= 2*7*3.14/3600 inches/sec=0.012211 inches/sec

The path (distance) that minute hand past is D=V*t = 0.012211 * 5 min= 0.012211 * 300sec=>

D=3.663≈3.66 inches

Good luck!!!

6 0
3 years ago
In a fruit basket containing apples and oranges,1/4 of the fruit are oranges.
Oxana [17]
None of these answers can be the answer okay so it should be 1/6
Therefore the answer is a.
To get this first you add 3+15=18
Next you divide it by 6, 18 divided by 6 =3
Therefore 1/6=3
I hope that this helped

6 0
3 years ago
Other questions:
  • What is the LCM of 6 and 9?
    8·2 answers
  • What is the perimeter of the rectangular below 6 in 8 in 6 in 8 in
    9·2 answers
  • Super confused definitely need help on this
    13·2 answers
  • Naomi deposited money into a savings account that is compounded quarterly at an interest rate of 6%. She thinks this quarterly r
    10·1 answer
  • What are the angles? HELP ASAP
    11·1 answer
  • A survey of Mrs. Ramirez's students showed that 30
    7·1 answer
  • 5
    6·1 answer
  • Feet Yards
    15·1 answer
  • Graph the line that passes through the points (1,-6) and (2,-5) and determine the equation of the line.
    11·1 answer
  • Graph the system of inequalities. Then use your graph to identify the point that represents a solution to the system.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!