sammy3551
sammy3551 sammy3551
  • 02-07-2019
  • Mathematics
contestada

What is the solution to the system of equations?
y = 5x + 2
3x = -y + 10
(4, -18)
(-18, -4)
(7,1)
(1,7)

Respuesta :

gmany
gmany gmany
  • 02-07-2019

Answer:

(1, 7)

Step-by-step explanation:

[tex]\left\{\begin{array}{ccc}y=5x+2&(1)\\3x=-y+10&(2)\end{array}\right\\\\\text{substitute (1) to (2):}\\\\3x=-(5x+2)+10\\3x=-5x-2+10\qquad\text{add 5x to both sides}\\8x=8\qquad\text{divide both sides by 8}\\x=1\\\\\text{put the value of x to (1):}\\\\y=5(1)+2\\y=5+2\\y=7[/tex]

Answer Link

Otras preguntas

If the forces that act on a cannonball and the recoiling cannon from which it is fired are equal in magnitude, why do the cannonball and cannon have very differ
what percent of 98.4 is 7.38 help me asap
What unit is used to measure the distance between galaxies A.light years B.miles C.kilometers D.years
SELECT ALL THAT APPLY. Which animals are invertebrates? starfish earthworms tunicates amphibians lancelets octopus crab grasshopper
“the power to tax equals the power to destroy”
1.What is the slope of line b? a.1/2 b.2 c.-1/2
Which of the following statements are true based on the diagram?
What types of works use quotation marks for their titles?
Can someone review my essay. pt3
According to the declaration of independence, when should the people have the right to change their government? a. when the government doesn't protect their na