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
ycow [4]
3 years ago
11

What’s an injective function?

Mathematics
2 answers:
uranmaximum [27]3 years ago
8 0

Answer:

In mathematics, an injective function is a function that maps distinct elements of its domain to distinct elements of its codomain is the image of at most one element

Tanya [424]3 years ago
3 0

Answer:

an Injective function is a function that maps distinct elements of its domain to distinct elements of its codomain. In other words, every element of the function's codomain is the image of at most one element of its domain.

Step-by-step explanation:

You might be interested in
I need an answer ASAP!!! Tyyyy
patriot [66]

Part A

x = amount of money she starts with

(4/9)x = cost of the dress

(5/9)x = amount of money leftover after buying the dress

note that 4/9 and 5/9 add to 1 to represent 100% of her money

(3/4)*(5/9)x = (15/36)x = (5/12)x = amount spent on shoes

We see that she spent 5/12 of her original amount of money on shoes.

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

We can look at a more concrete example if the previous section does not make sense.

Let's multiply the denominators 9 and 4 to get 9*4 = 36. Doing this trick will mean that the later steps won't involve decimal values.

Let's say she starts off with $36

Multiply that with 4/9 to get (4/9)*36 = 16. So in this hypothetical situation, the dress costs $16 and she's left with 36-16 = 20 dollars.

Multiply that 20 by 3/4 to get (3/4)*20 = 15

In this situation, the shoes cost $15

We'll then divide the cost of the shoes (15) over the original amount of money she started with (36)

15/36 = (3*5)/(3*12) = 5/12

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

<h3>Answer:  5/12</h3>

=======================================================

Part B

From the first section in part A, we found that:

  • (4/9)x = amount of money spent on the dress
  • (5/12)x = amount of money spent on shoes

Add those two expressions

(4/9)x + (5/12)x = (16/36)x + (15/36)x = (31/36)x

This indicates that buying the dress and shoes will cost (31/36)x dollars, where x is the original amount of money Jing has to start with.

The amount left over is (5/36)x because 5/36 adds with 31/36 to get 1.

Take 1/3 of this to get:

(1/3)*(5/36)x = (5/108)x

Then set this equal to 18 and solve for x

(5/108)x = 18

5x = 18*108

5x = 1944

x = 1944/5

x = 388.80

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

Let's check the answer

If she starts with 388.80 dollars, then the dress costs (4/9)*388.80 = 172.80

She's left with 388.80 - 172.80 = 216 dollars after buying the dress.

She then spends the remaining 3/4 of that on shoes. So (3/4)*216 = 162 dollars is spent on the shoes.

Jing now has 216 - 162 = 54 dollars left over.

1/3 of which is spent on the shoe bag, meaning it costs (1/3)*54 = 18 dollars

This confirms our answer.

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

<h3>Answer:  $388.80</h3>
8 0
2 years ago
Your paycheck is $800 every two weeks. Each month, your fixed expenses include the following: $675 for rent; $200 for utilities;
kobusy [5.1K]

Answer:

Gary earned a gross pay of $1,047.30 last week. Using the fact that Social Security tax is 6.2% of gross pay, determine the amount of Social Security tax deducted from Gary's gross pay.

a.

$6.49

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
A bird releases waste from a height of
shepuryov [24]

Answer:

5secs

Step-by-step explanation:

Given the equation of the height expressed ad;

h(t) = - 16t^2 + initial height

Given that initial height = 400feet

h(t) = - 16t^2 + 400

The waste will hit the ground at when h(t) = 0

substitute

0 =  - 16t^2 + 400

16t^2 = 400

t² = 400/16

t² = 25

t = √25

t = 5secs

Hence it will take the easte 5secs to hit the ground

7 0
2 years ago
Blake has b baseball cards. His aunt gave him more cards, increasing his total number of cards by 25%. Which expression represen
Vera_Pavlovna [14]
.25b+ b is the answer to ur question
6 0
3 years ago
Read 2 more answers
You are offered two jobs. One with a yearly salary of $51,592, and the other an hourly
Crazy boy [7]
You will make 11588 mor dollars for the hourly job
4 0
3 years ago
Other questions:
  • At 3 p.m. an oil tanker traveling west in the ocean at 14 kilometers per hour passes the same spot as a luxury liner that arrive
    10·1 answer
  • A lumber company is making doors that are 2058.02058.0 millimeters tall. If the doors are too long they must be trimmed, and if
    5·1 answer
  • What is the prime factorization for 435
    13·2 answers
  • (07.05 LC) How many solutions does the equation 4y + 7 = 5 + 2 + 4y have? One Two None Infinitely many
    13·2 answers
  • Solve for x: x-14=39
    7·2 answers
  • adam had used 84 wihite squares 20 more white than yellow and 15 more red than yellow. what is the number of red squares adam us
    12·1 answer
  • Coach Carpenter and Mrs. Dyson each have a KPOP collection. For every five
    6·1 answer
  • using the distance formula d=√(x2- x1)^2 +(y2-y^1, what is the distance between point (-3,1) and point (-2,4) rounded to the nea
    12·1 answer
  • Write each of the following expressions as a^n or a^n b^m,
    10·1 answer
  • Terrance made a list of his expenses. He is creating a check-off matrix to organize when his bills are due. A check-off matrix i
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!