sheybooktkidiasaA sheybooktkidiasaA
  • 03-02-2017
  • Mathematics
contestada

What is 4x 3y=19,6x-5y=-57?

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 03-02-2017
4x+3y=19 and 6x-5y=-57
eliminate

multiply first equation by -6 and 2nd by 4
and add them

-24x-18y=-114
24x-20y=-228 +
0x-38y=-342

-38y=-342
divide both sides by -38
y=9
sub back


4x+3y=19
4x+3(9)=19
4x+27=19
minus 27 both sides
4x=-8
divide 4
x=-2


(x,y)
(-2,9)
Answer Link

Otras preguntas

As a testament to how bad smoking is, _____ of current smokers would like to quit. A. 90% B. 85% C. 70% D. 60%
70,000,000+400,000+10,000+8,000+500+30+9 word is the word form
Which information about the earth would not be represented when a globe is used as a model? Choose all answers that are correct. a. how the earth changes over
How to do criss cross multiplication
Three million and nine thounsandths
WORTH 15 POINTS!!!! A tropical species of mite named A.L. is the record holder for the strongest insect in the world. It can lift up to 1.182 x 10^3 times its o
The four terrestrial planets that have solid, rocky surfaces are ?
mary says the pen for the her horse
what is 1700000 divided by ,10?
To the nearest thousand , the population of Texas was estimated to be 24,327,000 in 2008 . describe the actual population that Texas could have had in 2008 .