braebraethekuni braebraethekuni
  • 13-03-2019
  • Mathematics
contestada

PLEASE, HELP, HELP, HELP! I REALLY, REALLY NEED THIS!

Solve the system of equations
2x+7y=3

x=−4y
​
x=
y=

Respuesta :

01101011011 01101011011
  • 13-03-2019

Check this attachment

Ver imagen 01101011011
Answer Link
jimrgrant1 jimrgrant1
  • 13-03-2019

Answer:

(12, - 3)

Step-by-step explanation:

Given the 2 equations

2x + 7y = 3 → (1)

x = - 4y → (2)

Substitute x = - 4y into (1)

2(- 4y) + 7y = 3

- 8y + 7y = 3

- y = 3 ( multiply both sides by - 1 )

y = - 3

Substitute y = 3 into (2) for corresponding value of x

x = - 4 × - 3 = 12

Solution is (12, - 3)

Answer Link

Otras preguntas

What were the games at olympia about?
What do ocean waves and sound waves have in common?
what are 2 equationsthat have infinetely many solutions
Read the following excerpt from Grendel. "You're all crazy," I bellowed, "you're all insane!" I'd never howled more loudly in my life. Darts like hot coals went
In 1996 a ban of nuclear weapons was
Which deserts are located in Chile and Argentinea
if the US had been poor in natural resources how would industrialization has been affected
which ratio correctly compares 120 cm to 80 mm. A. 3 to 20 B. 3 to 2 C. 15 to 1 D. 150 to 1 Please Explain Will thank rate 5 stars
At the market, 2.4 pounds of carrots cost $1.68 and 1.8 pounds of broccoli cost $1.53. how much more does 1 pound of broccoli cost the 1 pound of carrots
What are two elements of American culture that had been borrowed from ancient Roman cultures.