En una fábrica de refrescos se envasan 1100 litros en 400 envases, unos de 2 litros y otros de 3 litros. ¿Cuantos envases de 2 y 3 litros se utilizan?

Greetings from Brasil...

X = 2 liter container

Y = 3 liter container

the total of containers are:

X + Y = 400

the capacity of the containers is

2X + 3Y = 1100

Assembling the equation system

2X + 3Y = 1100

X + Y = 400       x(-2)

2X + 3Y = 1100

-2X  -2Y = - 800    

X + Y = 400    so

X + 300 = 400

X = 400 - 300

BR:

Observe que:

1 vasilha de 2L = 1 × 2 = 2L

2 vasilhas de 2L = 2 × 2 = 4L

3 vasilhas de 2L = 3 × 2 = 6L

X vasilhas de 2L = X × 2 = 2X litros

1 vasilha de 3L = 1 × 3 = 2L

2 vasilhas de 3L = 2 × 3 = 4L

3 vasilhas de 3L = 3 × 3 = 6L

X vasilhas de 3L = X × 3 = 3X litros

Logo 2X + 3Y = 1100

Existem X e Y vasilhas que num total sao 400, logo

X + Y = 400

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.

answer: two angles are called supplementary if they add up to 180°. example: the two angles (140° and 40°) are supplementary because they add up to 180°.

step-by-step explanation: