carloseontiveros carloseontiveros

22-06-2017
Mathematics

contestada

find the solution of this system of equations. seprate the x- and y- valuess with a comma.
x=-4+y
-2x-5y=15

Respuesta :

22-06-2017

( x , y ) = ( -5 , -1 )

Answer Link

ghanami ghanami

22-06-2017

hello :
x=-4+y ...(1)
-2x-5y=15....(2)
subct in (2) :
-2(-4+y)-5y = 15
8-2y-5y = 15
-7y = 7
y = -1
in (1) : x = -4+(-1)
x= -5

Answer Link

Otras preguntas

How can finding out that a hypothesis is not true be useful for a scientist

What are the pueblo Indians

Marcie wants to enclose her yard with a fence. Her yard is in the shape of a rectangle attached to a triangle. The formula for the area of the enclosed space is

The Mohs hardness scale increases linearly from 1 to 10 true or false?

1. Perimeter of a hexagon with 3.25-m sides. 2. How much are 7 pencils at 3 for $1.65? 3. How much is 7.25 kg at $20 per kilogram? 4. Order 1.53, 150%, 1.49, 1

Which of the following singular nouns does not form an irregular plural? a. tree b. ox c. tooth d. mouse

How did European voyages of Exploration lead to European empires in the Eastern Hemisphere?

From 800–1200, the Khmer and Mon peoples moved into the northern regions of a. Cambodia. b. Thailand. c. Vietnam. d. Myanmar

A pet store has 50 tropical fish and 10 large fish tanks. The store charges $3.00 per fish and $50 for a large fish tank. How much money can the store earn from

What were the environmental consequences of industrialization in the American Northeast? Destruction of citrus crops Spread of malaria Pollution of the Pacific