Una doctora utiliza 2 1/2 litro de suero para un paciente y 1 2/5 para otro.
¿cuantos litros de suero utiliza?

Lo que debe hacer es agregar 2 1/2 y 1 2/5 para obtener su respuesta.

2 1/2 + 1 2/5 = 3 9/10.

Si esta es una mala traducción en su idioma, puede culpar al traductor de Google. No soy hispanohablante Gracias por su comprensión.

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.

it has to have an angle of 90 degrees