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
Diano4ka-milaya [45]
3 years ago
6

What is the prime factorization of 20

Mathematics
2 answers:
nignag [31]3 years ago
3 0

20 = 2×2×5 = 2²×5

answer: 2²×5

Nat2105 [25]3 years ago
3 0

Answer:

2^2*5

Step-by-step explanation:

20=4*5=2*2*5=2^2*5

Please mark as Brainliest! :)

Have a nice day.

You might be interested in
How to solve X + y = 2<br> X - y = 4
SpyIntel [72]
So y+x=2
x-y=4
one way is subsituteion where yousubisutte one of the number for another exg

x-y=4
add y to both sides
x=y+4
subsitute y+4 for x in x+y=2
 y+4+y=2
2y+4=2
subtract 4 from both sides
2y=-2
divide both sides by 2
y=-1
subsiutte
x+y=2
x-1=2
x=3




or elimination

x+y=2
x-y=4
add the two equations and cancel the y terms

x+x+y-y=2+4
2x=6
divide both sides by 2
x==3
subsitute
x+y=2
3+y=2
y=-1


so x=3
y=-1
5 0
3 years ago
Simplify: [4 + 6 x (5 - 2)] + 8<br><br> 30<br> 31<br> 24<br> 72
ludmilkaskok [199]

Answer: the answer i got is the 30


Step-by-step explanation:

so first you had to do the parentheses

(5-2)=3

[4+6 multiplied by 3] + 8

[4+18]+8

22+8

=30

6 0
3 years ago
Read 2 more answers
2. In your own words, explain HOW to find the standard deviation of this data set. (20 points) 3. What does the standard deviati
Ket [755]

Answer:

\sigma = 11.28 --- Standard deviation

Step-by-step explanation:

Given

See attachment for graph

Solving (a): Explain how the standard deviation is calculated.

<u>Start by calculating the mean</u>

To do this, we divide the sum of the products of grade and number of students by the total number of students;

i.e.

\bar x = \frac{\sum fx}{\sum f}

So, we have:

\bar x = \frac{50 * 1 + 57 * 2 + 60 * 4 + 65 * 3 +72 *3 + 75 * 12 + 77 * 10 + 81 * 6 + 83 * 6 + 88 * 9 + 90 * 12 + 92 * 12 +95 * 2 + 99 * 4 + 100 * 5}{1 + 2 + 4 + 3 +3 + 12 + 10 + 6 + 6 + 9 + 12 + 12 +2 + 4 + 5}

\bar x = \frac{7531}{91}

\bar x = 82.76

Next, calculate the variance using the following formula:

\sigma^2 = \frac{\sum f(x - \bar x)^2}{\sum f}

i.e subtract the mean from each dataset; take the squares; add up the squares; then divide the sum by the number of dataset

So, we have:

\sigma^2 = \frac{1 * (50 - 82.76)^2 +...................+ 5 * (100 - 82.76)^2}{91}

\sigma^2 = \frac{11580.6816}{91}

\sigma^2 = 127.26

Lastly, take the square root of the variance to get the standard deviation

\sigma = \sqrt{\sigma^2}

\sigma = \sqrt{127.26}

\sigma = 11.28 --- approximated

<em>Hence, the standard deviation is approximately 11.28</em>

Considering the calculated mean (i.e. 82.76), the standard deviation (i.e. 11.28) is small and this means that the grade of the students are close to the average grade.

8 0
2 years ago
An algebra class has 16 students and 16 desks. For the sake of variety, students change the seating arrangement each day. How ma
sineoko [7]

Answer: a) 2092278989 b) 576, c) \dfrac{576}{2092278989}

Step-by-step explanation:

Since we have given that

Number of students = 16

Number of desks = 16

a)  How many days must pass before the class must repeat a seating arrangement?

16!=2092278989

If the number of rows = 4

b) How many seating arrangements are there that put Larry, Moe, Curly, and Shemp in the front seats?

4!\times 4!\\\\=24\times 24\\\\=576

c) How many seating arrangements are there that put Larry, Moe, Curly, and Shemp in the front seats?

\dfrac{576}{2092278989}

Hence, a) 2092278989 b) 576, c) \dfrac{576}{2092278989}

6 0
3 years ago
How do I find the area of a circle and the radius is 4
Virty [35]
Area= pi(radius)squared
6 0
3 years ago
Read 2 more answers
Other questions:
  • 2x+2y=10 solve for x
    14·1 answer
  • N an
    7·1 answer
  • Help please been stuck on this
    5·1 answer
  • -4=b/2 <br> a)-8<br> b)-2<br> c)2<br> D)8
    15·1 answer
  • A closet contains 8 shirts, 5 skirts, and 6 pairs of shoes. How many possible outfit combinations are there?
    9·2 answers
  • Find the missing side lengths.
    5·1 answer
  • ANYWAYS next one qwq I’m already loosing hope and self esteem
    5·2 answers
  • To qualify to drive in HOV lanes, your car must have _____.
    12·1 answer
  • Find the principal which earns birr 115.38 in 8 years at <img src="https://tex.z-dn.net/?f=4%5Cfrac%7B1%7D%7B2%7D" id="TexFormul
    9·1 answer
  • Explain the steps you would take to find the area of the following composite shape. (Use 3.14 for Tr.)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!