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Zarrin [17]
3 years ago
11

Manuel is filling water balloons at a constant rate of 3 water balloons per minute.

Mathematics
1 answer:
Nesterboy [21]3 years ago
6 0
75 watch balloons filled in 40 mins
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en un maratòn participan corredores de todos los continentes 5/6 de los corredores son europeos se sabe que los americanos son l
Marysya12 [62]

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

8 0
2 years ago
9 * 9 ^ 2 x + 3 equal 27 * 3 ^ x - 2​
Amiraneli [1.4K]

3^2*3^2 (2x+3)=3^2+4x+6=3^4x+8

3^3*3^x-2=3^x+1

4x+8=x+1

3x=-7

x=-7/3

6 0
2 years ago
Proportions and equations solve
kirza4 [7]
Y=9x because if you divided y by x all the numbers will  equal to 9 which is proportional
7 0
2 years ago
Order each number greatest to least 1/2, -2, square root of 5, -7/4, 2.4<br>PLEASE HELP ME
Luden [163]

Answer:

I think its

2.4, square root of 5, 1/2, -7/4, -2

hope this helps :D

4 0
3 years ago
Kelli has a family photograph with a width of 6 in and a height of 8 in. She wants to enlarge the photograph so that its width i
QveST [7]
The height of the enlarged picture will be 20 in because 15 divided by 6 is 2.5 so you multiply 2.5 by 8 in and you get 20.
6 0
3 years ago
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