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
aleksandr82 [10.1K]
3 years ago
7

Alexi thinks of a number. he multiplies his number by 10 and then divides the answer by 100. he then multiples this answer by 10

00 and gets a final answer of 67. What number does Alexi thinks of first ?​ please tell fast
Mathematics
2 answers:
Elden [556K]3 years ago
5 0

Answer:

The number Alexis thinks of first is 6.7.

Step-by-step explanation:

Let the number Alexis thinks of be x and the first answer he got be y.

Since he multiplies the number by x and divides the answer by 100, the equation is

10x = y

10x = \frac{y}{100}

Then, he multiplies this answer, \frac{y}{100}, by 1000 and gets a final answer of 67. The equation is

\frac{y}{100} × 1000 = 67

To find y, you divide 1000y by 100 which gives 10y.

i.e. \frac{1000y}{1000} = 67

10y = 67

Divide both sides of the equation by the coefficient of y (which is 10)

\frac{10y}{10} = \frac{67}{10}

y = 6.7

Substituting 6.7 for y in 10x = y

10x = 6.7

Divide both sides of the equation by the coefficient of x (which is 10)

\frac{10x}{10} = \frac{6.7}{10}

x = 0.67

∴ The number Alexis thinks of first is 0.67.

Hope this helps!!! :))

sesenic [268]3 years ago
4 0

Answer:

0.67

Step-by-step explanation:

<u>Solution 1</u>

We can work out the initial number by going backwards from the end:

67/1000= 0.067

0.067*100= 6.7

6.7/10= 0.67

<u>Solution 2</u>

(x*10/100)*1000= 67

x/10*1000= 67

100x= 67

x=67/100

x=0.67

You might be interested in
Given that<br> x:8=2:x<br> Calculate the positive value of x.
kow [346]

Answer:

x = 4

Step-by-step explanation:

x : 8 = 2 : x \\  \frac{x}{8}  =  \frac{2}{x}  \\  \\ cross \:  \: multiple \\  {x}^{2}  = 16 \\ x =  \sqrt{16}  \\ x = 4

4 0
3 years ago
Read 2 more answers
Which value equivalent to (f•g)(10)?
Anna35 [415]

Answer:wha

Step-by-step explanation:

5 0
2 years ago
How to turn .9% into ratio​
leonid [27]

Answer:

9:100

Step-by-step explanation:

Turn 9% into a fraction by putting it over a hundred:

9/100

Then simply change the '/' into ':'

If this were another fraction, let's say, 4/6, then you'd put it in simplest form, which is 2/3 = 2:3

6 0
2 years ago
Jason bought 10 of the 30 raffle tickets for a drawing. What is the probability that Jason will win all 3 of the prizes if once
lyudmila [28]
10/30) x (9/29) x (8/28)  =  720 / 24,360

                                                             =  6 / 203  =  2.96 percent (rounded)   
6 0
3 years ago
Read 2 more answers
If AB= 5 what is the exact length of BD in square ABCD ​
Afina-wow [57]

Answer:

sqrt 50

Step-by-step explanation:

First of all this is a square so if AB = 5, then AD is also 5.

Let's get rid of the other triangle and only focus on triangle ABD.

Using Pythagorean theorem we are able to solve this problem.

The Pythagorean Theorem basically states that:

a^2 + b^2 = c^2

Where a and b are the legs and c is the hypotenuse, aka the thing that we are trying to solve for right now.

Substitute these numbers in: 5^2 + 5+2 = c^2

Solve: 50 = c^2

c= sqrt 50

^ and that is our answer!

5 0
3 years ago
Other questions:
  • The original price af a shirt is $120, the percent of decimal is %80 what is that sale price?
    9·1 answer
  • What is the equation, in slope-intercept form, of the line that passes through (0, −2) and has a slope of −3?
    15·2 answers
  • The vertex of this parabola is at (-2, -3). When the x-value is -1, the
    14·1 answer
  • The median of 1,2,2,8,9,14
    15·2 answers
  • Find -3\7 ÷ -1 1\14
    14·2 answers
  • Easy money : Explain how to muliply <br> 4 X 4 <br> 5 X 5<br> and <br> 6 X 6
    6·2 answers
  • Help us appreciated:)
    9·1 answer
  • What is the value of x?
    14·1 answer
  • Make x the subject of the formula<br> Y=3x+2
    12·1 answer
  • Perform the indicated operation. Show steps
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!