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dezoksy [38]
3 years ago
12

Simplify: 3r+n²-r+5-2n+2

Mathematics
2 answers:
lutik1710 [3]3 years ago
7 0
3r+n2−r+5−2n+2<span />=3r+n2+−r+5+−2n+2=3r+n2+−r+5+−2n+2<span />=(n2)+(−2n)+(3r+−r)+(5+2)<span />=n2+−2n+2r+7<span /><span />
=n2−2n+2r+7
nikitadnepr [17]3 years ago
4 0
3n+n^2-r+5-2n+2
5+2=7
3n+2n=5n
n^2 -r +5n +7
((IDK what order the variables are suppose to go in put i think I got it in the right order.))
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elena-s [515]
[[x]] means that the integer should be rounded down to the greatest integer that is of the same value as x or is lower than x.
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3 years ago
How to get 2|5 of 84.78
Elza [17]

You can see 84.78 as \frac{84.78}{1}.

So, you can see the problem as \frac{84.78}{1} * \frac{2}{5}

First, multiply all the numerators together and all the denominators together.

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3 years ago
Problema de capacidades Una empresa aceitera ha envasado 3000 litros de aceite en 1200 botellas de dos y de cinco litros. ¿Cuánt
mariarad [96]

Answer:

Hay 200 botellas de 5 litros y 1000 botellas de 2 litros.

Step-by-step explanation:

Un sistema de ecuaciones lineales es un conjunto de dos o más ecuaciones de primer grado, en el cual se relacionan dos o más incógnitas.

Resolver un sistema de ecuaciones consiste en encontrar el valor de cada incógnita para que se cumplan todas las ecuaciones del sistema.

En este caso, las variables a calcular son:

  • x= cantidad de botellas de 2 litros.
  • y= cantidad de botellas de 5 litros.

Una empresa aceitera ha envasado 3000 litros de aceite en 1200 botellas de dos y de cinco litros. Entonces es posible plantear el siguiente sistema de ecuaciones:

\left \{ {{2*x+5*y=3000} \atop {x+y=1200}} \right.

Existen varios métodos para resolver un sistema de ecuaciones. Resolviendo por el método de sustitución, que consiste en despejar o aislar una de las incógnitas y sustituir su expresión en la otra ecuación, despejas x de la segunda ecuación:

x= 1200 - y

Sustituyendo la expresión en la primer ecuación:

2*(1200 - y) + 5*y=3000

Resolviendo se obtiene:

2*1200 - 2*y + 5*y= 3000

2400 +3*y= 3000

3*y= 3000 - 2400

3*y= 600

y= 600÷3

y= 200

Reemplazando en la expresión x= 1200 - y:

x= 1200 - y

x=1200 -200

x= 1000

<u><em>Hay 200 botellas de 5 litros y 1000 botellas de 2 litros.</em></u>

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2 years ago
Is 52ft greater than or less than 912in
viktelen [127]
52 ft is less than 912.

There is 12 inches in a foot, so I did 52 x 12 = 624. 624 is less than 912.
6 0
3 years ago
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What is the middle term of (x + 5)(x + 2)
olasank [31]
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3 years ago
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