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
sattari [20]
3 years ago
13

How do you write 1.21 repeating as a fraction

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
3 0

Answer:

Step-by-step explanation:

First, we can write:

x

=

1

.

¯¯¯¯

21

Next, we can multiply each side by  

100

giving:

100

x

=

121

.

¯¯¯¯

21

Then we can subtract each side of the first equation from each side of the second equation giving:

100

x

−

x

=

121

.

¯¯¯¯

21

−

1

.

¯¯¯¯

21

We can now solve for  

x

as follows:

100

x

−

1

x

=

(

121

+

0

.

¯¯¯¯

21

)

−

(

1

+

0

.

¯¯¯¯

21

)

(

100

−

1

)

x

=

121

+

0

.

¯¯¯¯

21

−

1

−

0

.

¯¯¯¯

21

99

x

=

(

121

−

1

)

+

(

0

.

¯¯¯¯

21

−

0

.

¯¯¯¯

21

)

99

x

=

120

+

0

99

x

=

120

99

x

99

=

120

99

99

x

99

=

3

×

40

3

×

33

x

=

3

×

40

3

×

33

x

=

40

33

You might be interested in
Which statements about experimental probability are true? Check all that apply.
makvit [3.9K]
The last one is always so. "People will elect Trump by a narrow margin based on a sample of 10000 people with a % error of 2%" is a typical statement.

A probability experiment will always count the number of times an event occurs. That's the whole point of an experimental probability. How many people respond favorably to a new Cancer Treatment is a typical question asked by someone conducting an experiment in probability.

C is kind of iffy. Perhaps it is too expensive, or it takes place over too long a period. Ideally repeat trials  should take place whenever possible. Bone Marrow Transplants are very expensive because of the strict isolation conditions. You're likely only to get one study done this, especially initially. To check to see if Cancer is a generational thing would be an example of a study that takes too long to repeat many times.

B is simply not true. They are not the same. What theoretical model would you use to mimic a survey? You actually have to go do the survey.

A is wrong. It is the other way around. 

Answer C is a maybe but check it. D and E are both true.


6 0
3 years ago
Read 2 more answers
A polynomial of degree 4 in y has at most
Kitty [74]

Answer:

C.

Step-by-step explanation:

The highest term must be of x^4, then decreasing to x^3, x^2, x and the constant term.

Altogether there are at maximum 5 terms.

5 0
4 years ago
Read 2 more answers
Solve for x.
ololo11 [35]
17. The answer should be 17
3 0
2 years ago
Read 2 more answers
Answers please?? Thank you!
Free_Kalibri [48]
A= 1,3
B= 5,5
C= 6,1
Here you go
8 0
3 years ago
What's the radius of a circle with an area of 64 square feet?
Tpy6a [65]
The answer is 4.51.............
8 0
3 years ago
Read 2 more answers
Other questions:
  • How do I find this expression?
    13·1 answer
  • What row of Pascal's triangle should be used when looking for the number of ways 15 students can be selected from a class of 32
    11·2 answers
  • The degree of non constant zero polynomial is​
    11·2 answers
  • Line g is dilated by a scale factor of one half from the origin to create line g'. Where are points E' and F' located after dila
    10·2 answers
  • The ratio of children to adults at the football game was 23. If there were 140 children at the football game,
    14·1 answer
  • A - 6 - 6a = 4<br><br> find the value of a
    12·2 answers
  • 84 cubic inches<br> 90 cubic inches<br> 100 cubic inches<br> 126 cubic inches
    10·1 answer
  • Solve each inequality 3+1/2(3-x)&lt;-7
    15·1 answer
  • Make a bell curve for the points 99, 60, 82, 78, 93, 71, 68, 86, 80, 95, 72, 64
    10·1 answer
  • Sum of the three numbers in an AS is 33 and the sum of their cubes is 5049. find the numbers
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!