grothhailey grothhailey
  • 12-06-2022
  • Mathematics
contestada

solve using substitution, 5x+y=9 10x-7y=-18

Respuesta :

jsimpson11000 jsimpson11000
  • 12-06-2022

Answer:

See below

Step-by-step explanation:

5x + y = 9      re-arrange  to    y = 9-5x  

   use this value of 'y' in the second equation:

    10x - 7(9-5x) = - 18

       solve for x = 1

  sub in this value of 'x' into one of the equations to compute 'y'

5 (1) + y = 9

  y = 4

Answer Link

Otras preguntas

Iron(III) sulfite has the formula a) Fe₃SO₃ b) Fe₂(SO₄)₃ c) Fe₂(SO₃)₃ d) Fe₂SO₄ e) Fe₂SO₃
What's 0.003 1/10 of
Help on these plzzzzz it is really hard
What should the last paragraph of a cover letter include?
What are cirrus.cirrostratus. And cirrocumulus clouds made up of
What is the definition of role on the wall
If the sale tax is 8.875, find the total cost you would pay for : A 22.50 shirt A 6,500 car A house for 750,000
(has,have) any of the missing packages been located?
Explain the steps that show how the sun provides the energy for surface ocean currents:
Alexa drew a retangle with an area of 36 square centimeters. The rectangle she drew has the smallest perimeter possible for this area. What is the lenght and wi