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
dlinn [17]
3 years ago
12

Prove that the set of all odd positive integers is countable.

Mathematics
1 answer:
zloy xaker [14]3 years ago
5 0

Answer:

See below.

Step-by-step explanation:

The set of  all positive integers N is countable so we need to show that there is a 1 to 1 correspondence between the elements in N  with the set of all odd positive integers. This is the case as shown below:

1 2 3 4 5 6 ...

|  |  |   |   |  | ....

1 3 5 7 9 11....

You might be interested in
PLS help me Order four and seven tenths repeating, negative four and eight ninths, 490%, and −4.9 from least to greatest.
Digiron [165]

The order from least to greatest negative four and seven tenths repeating, negative four and eight ninths, 490%, and −4.9 from least to greatest is; option A

  • −4.9,
  • negative four and eight ninths
  • four and seven tenths repeating
  • 490%,

<h3>Ascending order</h3>

four and seven tenths repeating

= 4.77777777

negative four and eight ninths

= -4 8/9

= -4.888888888888888

490%

= 490/100

= 4.9

−4.9

Rearranging from least to greatest (ascending order)

  • -4.9
  • -4.888888888888888
  • 4.77777777
  • 4.9

Learn more about ascending order;

brainly.com/question/12783355

#SPJ1

6 0
2 years ago
The bottom and top of a box are rectangles twice as long as they are wide. Find the volume of the box if it is four feet high an
Sav [38]

Let x = the width

then

2x = the length

:

The box dimensions: 2x by x by 4

Given the surface area:

2(2x*x) + 2(2x*4) + 2(x*4) = 220

:

4x^2 + 16x + 8x = 220


A quadratic equation:

4x^2 + 24x - 220 = 0

simplify, divide by 4

x^2 + 6x - 55 = 0

Factor

(x+11)(x-5) = 0

The positive solution is what we want here:

x = 5 ft is the width

then

2(5) = 10 ft is the length

:

Find the volume

10 * 5 * 4 = 200 cu/ft is the volume


5 0
3 years ago
A:Write (⅔)² in expanded form,<br> B. And then evaluate.
KatRina [158]

Answer:

4/9

Step-by-step explanation:

(2/3)^2

(2/3) x (2/3)

2 x 2 is 4

3 x 3 is 9

4/9

4 0
3 years ago
A rectangle has a length of 12 inches and a width of 6 inches. A second rectangle will be drawn with a scale factor of
LenaWriter [7]

Answer:

36 × 18=648

Step-by-step explanation:

first one should do the area which results to 36 inches.

secondly do 3 × length of each side of the rectangle since scale factor is gotten by doing the recipricol of the scale factor given.

6 0
3 years ago
Does y=2x-4 represent a linear function?
Tanya [424]

Answer:

Yes

Step-by-step explanation:

This equation is in slope-intercept form, y=mx+b. If graphed, it would be a line.

Hope this helps!

5 0
3 years ago
Read 2 more answers
Other questions:
  • I need the answers to 1 through 5. The table is for 2 through 5
    7·1 answer
  • bill bought a large submarine sandwich and cut it into 8 equal pieces. He ate 1/4 of the sandwich. How can you write how much of
    11·2 answers
  • How do you Subtract 9x^2 + 22x - 46 from 12x^2 - 8x + 12.
    9·1 answer
  • HELPP I NEED THIS ASAP!! 10 points
    9·1 answer
  • Baker sammy helppppp​
    7·1 answer
  • WORTH 22 POINTS please help me :)
    13·1 answer
  • Someone help me on this plzzz!!
    5·1 answer
  • If x+2 is a factor of the polynomial: 3x²+kx, then the value is​
    9·1 answer
  • 9x-4y=-17 for y answer it for me plz
    10·2 answers
  • Write 89 tenths in standard form *
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!