boybaby boybaby
  • 03-01-2020
  • Mathematics
contestada

what is the solution of the systrem 2x - y = -7 4x - y = -4

Respuesta :

Yang100
Yang100 Yang100
  • 03-01-2020

Answer:

x=3/2, y=10. (3/2, 10).

Step-by-step explanation:

2x-y=-7

4x-y=-4

--------------

-2(2x-y)=-2(-7)

4x-y=-4

---------------------

-4x+2y=14

4x-y=-4

-----------------

y=10

2x-10=-7

2x=-7+10

2x=3

x=3/2

Answer Link

Otras preguntas

Which of the following should be filed immediately after Friedman? A) fulke B) friar C) flint D) franz
Why is it difficult to grow crops in northern Mexico?
What is the next fraction in this sequence? 2/3, 3/5, 8/15, 7/15... Simplify the answer
Henri conducts an experiment to determine who likes peanut butter more: boys or girls. He has 25 girls and 25 boys taste some peanut butter and then rate it on
Over time one group of species in a ecosystem is replaced by a different group of species through a process called
Identify the unit rate in the graph. A) 125 B) 75 C) 50 D) 25
What percentage of data is between the lower quartile and the upper quartile?
which of the following is an example of a secondary source?
What were FDR'S for the end of war?
What shift in employment trends has occurred by the mid-1950s?