claudiaroyer14
claudiaroyer14 claudiaroyer14
  • 10-10-2018
  • Mathematics
contestada

use substitution to solve the linear system of equations
y=4x
3x+5y=-46

a. (-8,-2)
b. (8,-2)
c. (-2,8)
d. (-2,-8)

Respuesta :

rejkjavik rejkjavik
  • 10-10-2018

we are given

system of equations

[tex]y=4x[/tex]

[tex]3x+5y=-46[/tex]

we can plug first equation into second equation

we get

[tex]3x+5(4x)=-46[/tex]

Simplify left side

[tex]3x+20x=-46[/tex]

[tex]23x=-46[/tex]

Divide both sides by 23

and we get

[tex]x=-2[/tex]

now, we can find y-value

[tex]y=4*-2[/tex]

[tex]y=-8[/tex]

so, our solution is

[tex](x,y)=(-2,-8)[/tex].............Answer

Answer Link

Otras preguntas

The relocation of U.S. citizens of Japanese descent during World War II was a violation of which constitutional principal? A) limited government B) freedom of a
An automobile detailer can detail 20 cars in 10 hours. At this rate, how many cars can he detail in 1 hour?
find the quotient -8b^2-26b+24/-8b+6
350 yards to 420 yards
Which of the following statements about language in East Asia is false? A. Written language is based on classical Korean script. B. Calligraphy is an important
What are some visible signs of an acid-base reaction?
Which of the following processes should angel use to merge cells a1:d4 to create a title
18 3/4 divided by 1 1/2
Knowing that dr. mallet, a clinical psychologist, is interested in the latent and manifest content of his client's dreams, it's safest to suspect that dr. malle
"Somber clouds that were rolling with sinister intention" from "the storm" is what type of figurative speech