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
Novay_Z [31]
3 years ago
5

What number between 20 and 25 is a prime number?

Mathematics
2 answers:
Elena-2011 [213]3 years ago
6 0
Prime numbers are numbers that have only one factor pair; 1 and themselves.

Let's start from 21.

21 = 1 x 21, 3  x 7.
This has two factor pairs, this is not prime.

Let's try 22.

22 = 1 x 22, 2 x 11.
This also has two factor pairs, this is not prime.

Let's try 23.

1 x 23.
This is a prime number, as it only has one factor pair; 1 and itself.

23 is your prime number.

I hope this helps!
disa [49]3 years ago
5 0
23 is a prime number because the only multiplacation is 1 times 23
You might be interested in
How do you connect the ideas of congruency and rigid motion?
natta225 [31]
<span>Rigid motion does not change the shape of an object. if you move an object to another place, you can think of it as a new object (a copy) at the new position and it will be congruent to the object at the original position. or, if two objects are congruent, you can move one object so it lies on top of the other, showing they are congruent.</span>
3 0
2 years ago
Read 2 more answers
In the last three years frederico's basketball team won 40 more games than they lost if they won 150 games what was their ratio
Westkost [7]
150 games won: 110 games lost

Ratios
150:110
150/110
150 to 110
3 0
3 years ago
A miner descended 1400 feet into a mine from the mine's entrance. While in the mine, he then rose 800 feet and then descended 45
postnew [5]
The correct answer is A.-1050
7 0
3 years ago
Read 2 more answers
What are the x-intercepts of the graph of the quadratic function
Svetllana [295]
  • Zero Product Property: if a × b = 0, then either a or b = 0 or both a and b = 0.

(Make sure to set f(x) to zero)

So for this equation, I will be factoring by grouping. Firstly, what two terms have a product of -5x^2 and a sum of 4x? That would be 5x and -x. Replace 4x with 5x - x: 0=5x^2+5x-x-1

Next, factor 5x^2 + 5x and -x - 1 separately. Make sure that they have the same quantity on the inside: 0=5x(x+1)-1(x+1)

Now you can rewrite the equation as: 0=(5x-1)(x+1)

Now apply zero product property to the factors to solve for x:

5x-1=0\\5x=1\\x=\frac{1}{5}\\\\x+1=0\\x=-1

<u>The x-intercepts are (1/5 ,0) and (-1,0).</u>

5 0
3 years ago
Which rule explains why these triangles are congruent?
Naddika [18.5K]
A= angle
S= side
This would be AAA, so the answer is C since that answer is not here:)
4 0
2 years ago
Other questions:
  • What is the volume of the item described? An ice cream cone with a cone of radius 2 cm and height of 9 cm with a hemisphere of i
    12·2 answers
  • The hypotenuse of a right triangle has a length of 14 units and a side that is 9 units long. which equation can be used to find
    11·2 answers
  • Two months ago, the mean daily rainfall in a local city was 9.4 cm. The mean absolute deviation was 3.5 cm. Last month, the mean
    10·2 answers
  • Here’s a clearer picture
    15·1 answer
  • I need help with this question! Quickly please!
    9·1 answer
  • There are 10 girls and 8 boys in Mr Augello's class
    8·2 answers
  • Line t is the perpendicular bisector of FG. If line t intersects FG at point H, which of the following statements must be true?
    14·2 answers
  • I really need help with this<br><br> Can someone help me thx<br><br><br> Plsssssss
    5·2 answers
  • Pls help 10 pts <br> NO LINKS
    5·2 answers
  • Which system has the best solution as the system below?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!