purpleroseee1
purpleroseee1 purpleroseee1
  • 25-07-2020
  • Mathematics
contestada

In which line is a mistake first made when solving the following system of equations by substitution?
2x - y = -4
3x + y = -9

Respuesta :

Rsun4758
Rsun4758 Rsun4758
  • 25-07-2020

Answer:

x=(-13/5), y=(-6/5)

Step-by-step explanation:

I will do step by step since I dont see a picture.

when you add them it gets rid of the y,

5x=-13

divide out the 5

x=(-13/5)

plug this into the first equation

2(-13/5)-y=-4

-5.2-y=-4

add 5.2 to each side

-y=1.2

divide out the negative

y=-1.2 or (-6/5)

Answer Link

Otras preguntas

,,sarah is building a birdhouse the nail she uses are one inch long.the wood board is 1 foot long . how many times smaller are the nails
What was a main goal of the Panama Canal? to improve relations between the United States, Colombia, and Panama to spread democracy and help Latin American econo
How have the united states and the rest of the world responded to terrorism
CFC stands for what?
How many valence electrons does chlorine have?
substitution y=2x+5 x+2y=15
Which of the following inventions is responsible for allowing the development of new television and radio technology, as well as GPS navigation? satellite PET s
what does Uncle Sam represent?
which expressions are equivalent to 2(4f+2g) select all that apply 8f+4g 2f+(4+2g) 8f+2g 4(2f+g)
62.5% in two equivalent forns