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
victus00 [196]
2 years ago
13

en un maratòn participan corredores de todos los continentes 5/6 de los corredores son europeos se sabe que los americanos son l

a dècime parte de los europeos y que los africanos son la quinta parte de los americanos el resto de los participantes son mitad asiaticos y mitad de Oceanìa
Mathematics
1 answer:
Marysya12 [62]2 years ago
8 0

Usando proporciones, se encuentra que 400 africanos han participado.

En total, hay x participantes.

\frac{5}{6} de los corredores son europeos, o sea:

E = \frac{5x}{6}

Los americanos son la dècime parte de los europeos, o sea:

Am = \frac{1}{10}E = \frac{5x}{60} = \frac{x}{12}

Los africanos son la quinta parte de los americanos, o sea:

Afr = \frac{1}{5}Am = \frac{x}{60}

En la carrera han inscritos 24 000 participantes, o sea, x = 24000. Por eso, la cantidad de africanos es:

Afr = \frac{x}{60} = \frac{24000}{60} = 400

Para obtener más información sobre las proporciones, puedes visitar a brainly.com/question/24615636

You might be interested in
Find the surface area of this triangular prism
sergij07 [2.7K]

Answer:

24 square inches

Step-by-step explanation:

the explanation is in the picture

please like and Mark as brainliest

4 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs.
Reika [66]

Answer:

Step-by-step explanation:

3x > 15         2x > 12        x + 1 < 8             7x < 42

/3     /3        /2     /2            -1     -1             /7     /7

x > 5              x  > 6              x < 7                x < 6

4 0
3 years ago
3. Which expression is equivalent to the expression shown below?
chubhunter [2.5K]

Answer:

option a

Step-by-step explanation:

we have:

7/2x-3(5x-1/2)

apply distributive property we have:

7/2x-3*5x-3*(-1/2)

7/2x-15x+3/2

7/2-15=-23/2

so we have:

-23/2x+3/2

7 0
3 years ago
I really need help with 1 and 2 please help me I begg you
Lera25 [3.4K]
1.) So 1/5 of a relay, or r, is 3/4 of a mile.
1/5r = 3/4
Multiply 5 on both sides of the equation.

r = 15/4

The relay was 15/4 of a mile or 3 3/4 of a mile.

2.) No, it is not because the sum of the digits are not divisible by 3.

Hope this helps! :)
7 0
3 years ago
Read 2 more answers
Which equation shows exponential GROWTH?<br> A) y=.5^x<br> B) y=.25^x<br> C) y= 25^x<br> D) y= .2^x
eduard

c) y = 25^x

explanation

because y increase as x increases

7 0
3 years ago
Other questions:
  • True or False. Thanks!
    5·2 answers
  • A conical-shaped umbrella has a radius of 0.4 m and a height of 0.45 m. Calculate the amount of fabric needed to manufacture thi
    10·1 answer
  • 10%of what is 14 i need to find the whole number
    12·1 answer
  • Round this number to the nearest 10,000. 2,874,992
    15·1 answer
  • The figure below shows segments KL and MN which intersect at point P. Segment KM is parallel to segment LN:
    5·2 answers
  • What is the value of x + 3y + z if x = 4, y = 5, and z= 22<br>a) 16<br>b) 41<br>c) 2​
    14·1 answer
  • Please help me answer this
    15·1 answer
  • The sum of the second and third terms of G.P is six times the fourth term. Find the two possible values of the common ratio​
    13·1 answer
  • Which set of side lengths will form a triangle
    7·1 answer
  • Explain how to use Pascal's Triangle to expand the binomial (3x-4y)^11
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!