10x10x10x10xqpx10x10x10

Solved

Show answers

Ответ:

arletsolis23p2cjls

18.11.2020

Mathematics

$\large\boxed{1.\overline{21}=\dfrac{40}{33}}$

Step-by-step explanation:

$x=1.\overline{21}\\\\x=1.212121...\qquad\text{multiply both sides by 100}\\\\100x=121.212121...\\\\\text{subtract x from 100x}\\\\100x-x=121.212121...-1.212121...\\\\99x=120\qquad\text{divide both sides by 99}\\\\x=\dfrac{120}{99}\\\\x=\dfrac{120:3}{99:3}\\\\x=\dfrac{40}{33}$

0,0(0 оценок)

Ask your question to the AI advisor

Ai-bot is an expert in any field and is the perfect companion for reliable and useful answers and advice on a variety of topics, including science, history, technology, art, sports, health, culture and more.

Ask your question

More tips

A Auto and Moto Discovering the Leader: What is the Most Expensive Car in the World?...
H Health and Medicine Hangover: How to Get Rid of It Quickly?...
S Style and Beauty How to Choose the Right Fur Coat and Avoid Regrets?...
C Computers and Internet How to Create a Folder on Your iPhone?...
G Goods and services How to sew a ribbon: Tips for beginners...
F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
C Computers and Internet Which Phone is Best for Internet Surfing?...
F Food and Cooking Everything You Need to Know About Pasta...
C Computers and Internet How to Choose a Monitor?...
H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...

Answers on questions: Mathematics

M Mathematics The cost for a certain music plan is 9.99 per year 0.25 per song you download if you pay 113.70 for one year find the number of songs you download...
M Mathematics Ken is financing a $355,000 mortgage for 30 years at a fixed rate of 7.55% what is the total cost of the principal and interest after 30 years...
M Mathematics How many possible arrangements are there in the letters of the word fred...
M Mathematics Consider the expression 3x(x-2) + 2 and 2x^2 + 3x - 12. a. evaluate each expression for x = 2 and for x = 7. based on your results, do you know whether the two expressions...
M Mathematics Write a real world problem for the equation 15w = 45 then solve the problem...
M Mathematics The intersection of roads m and n creates a 41.4 degree angle. what are the complimentary and supplementary angles of this intersection?...
M Mathematics ** (20 points) write a fraction setting the vertical length of the smaller triangle over its horizontal length. what does this fraction represent?...
M Mathematics 3. let s assume you purchase 100 shares of xyz company for $1 per share. after three months, the share price increases to $5. this means the value of the investment has...
M Mathematics Solve each inequality. m – 7 6 m –1 m 1 m 13 m –13 x + 4.5 ≥ 5.5 x ≥ 10 x ≥ 1 x ≥ 0.1 x ≤ 1 p + 12 9 p 21 p 3 p –21 p –3...
M Mathematics if a company sells about 3 of product A for every 2 of product B, how many of each would they sell if a total of 7500 were sold?...

Ask an AI advisor a question

I want advice