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Espaol I.Resuelve los siguientes ejercicios utilizando el mtodo de sustitucin. (Solve the following exercises using the substitution method). 1)5x - 2y = 22 2) 10x

Espaol

I.Resuelve los siguientes ejercicios utilizando el mtodo de sustitucin. (Solve the following exercises using the substitution method).

1)5x - 2y = 22 2) 10x + 5 y = 15

X + 2y = 22x - 3 y = -9

II.Resuelve los siguientes ejercicios utilizando el mtodo de eliminacin. (Solve the following exercises using the elimination method).

1)5 x - y = 32) -3x + 3y = 12

-2x + 4y = -12x + 4y = 6

I.Resuelve los siguientes ejercicios de matrices (Solve the following matrix exercises).

3514=1-152-13

21-12-16012=

4 3-2230

213+1 0 2=23+12-3 5 =

1522 51102316

II.Resuelve

1)En un grupo de 50 trabajadores, el salario promedio es $75 por da por trabajador. Si algunos de los trabajadores ganan 70 dlares al da y todos los dems ganan $80 al da, cuntos trabajadores ganan 70 dlares al da? (In a group of 50 workers, the average wage is $75 per day per worker. If some of the workers earn $70 a day and everyone else earns $80 a day, how many workers male $70 a day?)

2)Un avin dispone de 24 asientos en clase A y de 62 asientos en clase B cuya venta supone un total de $15,390. Sin embargo, slo sea han vendido 10 asientos en clase A y 40 en clase B, obteniendo un total de $8,750.Cul es precio de un asiento en cada clase? (An airplane has 24 seats in class A and 62 seats in class B whole sale represents a total of $15,390. However, only 10 seats in class A and 40 in class B have been sold, for a total of $8,750. What is the price of a seat in each class?)

3)Una vendedora de artculos miscelneos vende 100 juguetes, 50 maquillajes y 50 perfumes la primera quincena.La segunda quincena 60 juguetes, 60 maquillajes y 100 perfumes. Los precios por unidad de cada uno de los productos son respectivamente, $2.50, $3.00 y $10.00. ( A seller of miscellaneous items sells 100 toys, 50 makeup and 50 perfumes the first fortnight. The second fortnight 60 toys, 60 make-up and 100 perfumes. The unit prices of each of the products are respectively $2.50, $3.000 and $10.00.

a)Escribir una matriz de tamao 2x 3 que represente la cantidad de productos vendidos en las dos quincenas. ( provide a matrix of size 2x 3 that represents the number of products sold in the two fortnights).

b)Escribir un vector columna que represente el precio por unidad de cada producto. (provide a column vector that represents the price per unit of each product).

c)Hallar el vector columna cuyos elementos muestren los ingresos obtenidos por concepto de ventas la primera y segunda quincena. (Find the column vector whose elements show the income obtained from sales the first and second fortnight.

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