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kompoz [17]
3 years ago
15

Which expression is equivalent to: n + 2n - 0.28n

Mathematics
1 answer:
Finger [1]3 years ago
8 0
N+2n-0.28n
First you can add n+2n=3n then subtract 0.28n from 3n and you will get 2.72n
The answer is 2.72n
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your team wins 18 medals at a track meet the medals are gold silver and bronze in ratio of 2;2;5. how many of each medal were wo
WITCHER [35]

The team won 4 gold medals, 4 silver medals and 10 bronze medals.

Step-by-step explanation:

Given,

Total medals won = 18

Ratio of gold, silver and bronze = 2:2:5

Let,

x be the original number.

Therefore,

Gold medals = 2x

Silver medals = 2x

Bronze medals = 5x

According to given statement;

2x+2x+5x=18\\9x=18

Dividing both sides by 9

\frac{9x}{9}=\frac{18}{9}\\x=2

Gold medals = 2x = 2(2) = 4

Silver medals = 2x = 2(2) = 4

Bronze medals = 5x = 5(2) = 10

The team won 4 gold medals, 4 silver medals and 10 bronze medals.

Keywords: ratio, division

Learn more about division at:

  • brainly.com/question/1626495
  • brainly.com/question/1626676

#LearnwithBrainly

8 0
4 years ago
50 POINTS FOR ANSWERING
Greeley [361]

Answer:

The answer is 7(x + 25)

Step-by-step explanation:

The question states 25 push-ups plus x amount of push-ups per day. To find how many push-ups per week, we multiply how many push-ups per day by 7 (a week).

7 0
3 years ago
Problemas de razonamiento división de números decimales. Ayer Susana se fue de viaje a visitar a unos familiares. Recorrió 135,7
schepotkina [342]

Usando las relaciones entre velocidad, distancia y tiempo, se encuentra que ella condujo a una velocidad media de 90,5 km/h.

--------------------------

La <u>velocidad </u><u>es la distancia dividida por el tiempo</u>, por lo que:

v = \frac{d}{t}

  • Total de 135,75 km, o sea, d = 135,75
  • Llego en 1,5 horas, o sea, t = 1,5

La velocidad es:

v = \frac{d}{t} = \frac{135,75}{1,5}

División de decimales, o sea, seguimos multiplicando los números por 10 hasta que ninguno sea decimal:

v = \frac{135,75}{1,5} = \frac{1357,5}{15} = \frac{13575}{150} = 90,5

Ella condujo a una velocidad media de 90,5 km/h.

Un problema similar es dado en brainly.com/question/24558377

4 0
2 years ago
Write each number in standard form.<br>4. 80,000,000 + 4,000,000 + 100 + 8 the answer ​
dimaraw [331]

Answer:

84,000,108

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The formula for the perimeter of a rectangle is . What is the length of the unknown side of the rectangle below, if the perimete
Troyanec [42]

Answer:

Step-by-step explanation:

P=2l+2w

28=2l+2w

2l=2w-28

l = (2w-28)/2

l =2(w-14)/2

l = w-14

7 0
3 years ago
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